Logic Coding and Decoding Competitive Exams
50 questions · IQ Logic and Reasoning
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Question 1 of 50
If each letter has its alphabet position value (A = 1 ... Z = 26), what is the sum of the values of the letters in the word BOX?
ExplanationAdd the positions: 2 + 15 + 24 = 41.
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Question 2 of 50
In a certain code, ROAD is written as SQDH. How is BOOK written in that code?
ExplanationThe shifts increase by one for each position (+1, +2, +3, ...): ROAD -> SQDH. For BOOK: CQRO.
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Question 3 of 50
In a certain code, BAT is written as CBU. How is RING written in that code?
ExplanationEach letter is moved 1 step(s) forward: BAT -> CBU. Applying the same rule, RING -> SJOH.
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Question 4 of 50
In a certain code, PAKISTAN is written as KZPRHGZM. How is LAHORE written in that code?
ExplanationEach letter is replaced by its opposite in the alphabet (A-Z, B-Y, C-X ...): PAKISTAN -> KZPRHGZM, so LAHORE -> OZSLIV.
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Question 5 of 50
In a certain code, PLAN is written as QNDR. How is MIND written in that code?
ExplanationThe shifts increase by one for each position (+1, +2, +3, ...): PLAN -> QNDR. For MIND: NKQH.
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Question 6 of 50
If + means /, / means x, - means +, x means -. Find 24 + 6 / 3 - 2 x 5 = ?
ExplanationReplace the symbols with the real operators: 24/6x3+2-5. Using BODMAS this equals 9.
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Question 7 of 50
In a certain code, FISH is written as EHRG. How is BIRD written in that code?
ExplanationEach letter is moved 1 step(s) backward: FISH -> EHRG. Applying the same rule, BIRD -> AHQC.
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Question 8 of 50
In a certain code, DOG is written as WLT. How is CAT written in that code?
ExplanationEach letter is replaced by its opposite in the alphabet (A-Z, B-Y, C-X ...): DOG -> WLT, so CAT -> XZG.
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Question 9 of 50
If each letter has its alphabet position value (A = 1 ... Z = 26), what is the sum of the values of the letters in the word DOG?
ExplanationAdd the positions: 4 + 15 + 7 = 26.
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Question 10 of 50
If each letter has its alphabet position value (A = 1 ... Z = 26), what is the sum of the values of the letters in the word MOON?
ExplanationAdd the positions: 13 + 15 + 15 + 14 = 57.
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Question 11 of 50
If A = 1, B = 2, C = 3 and so on, and HEAD is coded as 8514, how is BEAD coded?
ExplanationEach letter is replaced by its position and written side by side: B E A D = 2 5 1 4 -> 2514.
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Question 12 of 50
In a code, 'ROSE' is written as 'TQUG'. How is 'LILY' written?
ExplanationEach letter moves +2: L-N, I-K, L-N, Y-A.
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Question 13 of 50
In a certain code, BOOK is written as YLLP. How is ROAD written in that code?
ExplanationEach letter is replaced by its opposite in the alphabet (A-Z, B-Y, C-X ...): BOOK -> YLLP, so ROAD -> ILZW.
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Question 14 of 50
If a pen is called a book, a book is called a bag, a bag is called a box and a box is called a chair, what do we use to write?
ExplanationWe write with a pen, and a pen is called a book.
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Question 15 of 50
If A = 2, B = 4, C = 6 and so on (each letter is twice its position), what is the sum of the values of the word CAB?
ExplanationC = 6, A = 2, B = 4; the sum is 12.
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Question 16 of 50
If each letter has its alphabet position value (A = 1 ... Z = 26), what is the sum of the values of the letters in the word BAG?
ExplanationAdd the positions: 2 + 1 + 7 = 10.
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Question 17 of 50
If in a certain code, DELHI is written as EFMIJ, what is the code for MUMBAI?
ExplanationEach letter moves +1: M-N, U-V, M-N, B-C, A-B, I-J.
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Question 18 of 50
In a certain code, DESK is written as CDRJ. How is LAMP written in that code?
ExplanationEach letter is moved 1 step(s) backward: DESK -> CDRJ. Applying the same rule, LAMP -> KZLO.
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Question 19 of 50
In a certain code, SUN is written as WYR. How is MOON written in that code?
ExplanationEach letter is moved 4 step(s) forward: SUN -> WYR. Applying the same rule, MOON -> QSSR.
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Question 20 of 50
In a certain code, PEN is written as SHQ. How is BOOK written in that code?
ExplanationEach letter is moved 3 step(s) forward: PEN -> SHQ. Applying the same rule, BOOK -> ERRN.
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Question 21 of 50
If + means -, - means x, x means /, / means +. Find 20 + 4 - 3 x 6 / 2 = ?
ExplanationReplace the symbols with the real operators: 20-4x3/6+2. Using BODMAS this equals 20.
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Question 22 of 50
In a code, 'ab cd ef' means 'good red apple', 'ef gh ij' means 'big red car' and 'kl cd gh' means 'good big boy'. Which code word means 'good'?
Explanation'Good' appears in the first and third sentences; the common code word is 'cd'.
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Question 23 of 50
In a code, 'ab cd ef' means 'good red apple', 'ef gh ij' means 'big red car' and 'kl cd gh' means 'good big boy'. Which code word means 'big'?
Explanation'Big' appears in the second and third sentences; the common code word is 'gh'.
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Question 24 of 50
In a certain code, HOME is written as FMKC. How is ROAD written in that code?
ExplanationEach letter is moved 2 step(s) backward: HOME -> FMKC. Applying the same rule, ROAD -> PMYB.
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Question 25 of 50
In a code, white means black, black means red, red means green and green means yellow. What is the code word for the colour of grass?
ExplanationGrass is green, and green is called yellow in this code.
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Question 26 of 50
In a code, 'pit na ho' means 'sky is blue', 'ho ko la' means 'blue and white' and 'na la mo' means 'is white here'. Which word means 'white'?
Explanation'White' appears in the second and third sentences; the common code word is 'la'.
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Question 27 of 50
In a code, red is called blue, blue is called green, green is called yellow and yellow is called white. What is the code name of the colour of the sky?
ExplanationThe sky is blue and blue is called green.
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Question 28 of 50
If A = 26, B = 25, C = 24 and so on up to Z = 1, what is the sum of the values of the word CAB?
ExplanationC = 24, A = 26, B = 25; 24 + 26 + 25 = 75.
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Question 29 of 50
In a certain code, KING is written as NLQJ. How is CROWN written in that code?
ExplanationEach letter is moved 3 step(s) forward: KING -> NLQJ. Applying the same rule, CROWN -> FURZQ.
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Question 30 of 50
If A = 1, B = 2, C = 3 and so on, and BAD is coded as 214, how is FACE coded?
ExplanationEach letter is replaced by its position and written side by side: F A C E = 6 1 3 5 -> 6135.
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Question 31 of 50
If A = 1, B = 2, C = 3 and so on, and CAB is coded as 312, how is DEAF coded?
ExplanationEach letter is replaced by its position and written side by side: D E A F = 4 5 1 6 -> 4516.
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Question 32 of 50
In a code, 'ab cd ef' means 'good red apple', 'ef gh ij' means 'big red car' and 'kl cd gh' means 'good big boy'. Which code word means 'red'?
Explanation'Red' appears in the first and second sentences; the code word common to both is 'ef'.
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Question 33 of 50
In a certain code, CAT is written as ECV. How is DOG written in that code?
ExplanationEach letter is moved 2 step(s) forward: CAT -> ECV. Applying the same rule, DOG -> FQI.
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Question 34 of 50
In a certain code, CLOCK is written as DNRGP. How is TABLE written in that code?
ExplanationThe shifts increase by one for each position (+1, +2, +3, ...): CLOCK -> DNRGP. For TABLE: UCEPJ.
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Question 35 of 50
If sugar is called salt, salt is called pepper, pepper is called turmeric and turmeric is called sugar, what will a person add to tea to sweeten it?
ExplanationTea is sweetened with sugar, and sugar is called salt in this code.
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Question 36 of 50
In a code, 'pit na ho' means 'sky is blue', 'ho ko la' means 'blue and white' and 'na la mo' means 'is white here'. Which word means 'is'?
Explanation'Is' appears in the first and third sentences; the common code word is 'na'.
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Question 37 of 50
If + means x, x means -, - means +, / means /. Find 5 + 4 x 6 - 2 / 2 = ?
ExplanationReplace the symbols with the real operators: 5x4-6+2/2. Using BODMAS this equals 15.
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Question 38 of 50
In a code, the word 'COMPUTER' is written as 'RETUPMOC'. How is 'PAKISTAN' written?
ExplanationThe word is written in reverse order: P-A-K-I-S-T-A-N reversed is N-A-T-S-I-K-A-P.
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Question 39 of 50
If + means x, - means /, x means -, / means +. Find 8 + 3 - 6 x 2 / 4 = ?
ExplanationReplace the symbols with the real operators: 8x3/6-2+4. Using BODMAS this equals 6.
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Question 40 of 50
If + means -, - means +, x means /, / means x. Find 12 + 4 x 2 - 6 / 3 = ?
ExplanationReplace the symbols with the real operators: 12-4/2+6x3. Using BODMAS this equals 28.
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Question 41 of 50
In a certain code, RAIN is written as OXFK. How is STORM written in that code?
ExplanationEach letter is moved 3 step(s) backward: RAIN -> OXFK. Applying the same rule, STORM -> PQLOJ.
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Question 42 of 50
If red is called blue, blue is called green, green is called yellow, yellow is called white, white is called black and black is called red, what is the colour of milk?
ExplanationMilk is white, and white is called black in this code.
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Question 43 of 50
If in a code language, the first and last letters of a word are interchanged, how is 'LAHORE' written?
ExplanationSwap the first (L) and last (E) letters: E-A-H-O-R-L.
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Question 44 of 50
In a certain code, NAME is written as MZNV. How is FIRE written in that code?
ExplanationEach letter is replaced by its opposite in the alphabet (A-Z, B-Y, C-X ...): NAME -> MZNV, so FIRE -> URIV.
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Question 45 of 50
If TABLE is coded as UBCMF, how is CHAIR coded?
ExplanationEach letter moves +1: C-D, H-I, A-B, I-J, R-S.
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Question 46 of 50
In a certain code, MAP is written as OCR. How is LAKE written in that code?
ExplanationEach letter is moved 2 step(s) forward: MAP -> OCR. Applying the same rule, LAKE -> NCMG.
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Question 47 of 50
If MONDAY is coded as 'NPOEBZ', how is FRIDAY coded?
ExplanationEach letter moves +1: F-G, R-S, I-J, D-E, A-B, Y-Z.
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Question 48 of 50
If 'FRIEND' is written as 'HUMJTK' in a code, how is 'CANDLE' written?
ExplanationThe shifts are +2, +3, +4, +5, +6, +7 (FRIEND -> HUMJTK). For CANDLE: C+2=E, A+3=D, N+4=R, D+5=I, L+6=R, E+7=L.
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Question 49 of 50
In a code, 'pit na ho' means 'sky is blue', 'ho ko la' means 'blue and white' and 'na la mo' means 'is white here'. Which word means 'blue'?
Explanation'Blue' appears in the first two sentences; the common code word is 'ho'.
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Question 50 of 50
In a certain code, LOVE is written as QTAJ. How is HATE written in that code?
ExplanationEach letter is moved 5 step(s) forward: LOVE -> QTAJ. Applying the same rule, HATE -> MFYJ.
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