Averages LAT MCQs

1. Question 1 of 50

   Average of 1,2,3,...,20?

   A 10.5 B 10 C 11 D 9.5
2. Question 2 of 50

   5 numbers avg = 28. First 3 avg = 25. Last 2 sum?

   A 71 B 65 C 75 D 50
3. Question 3 of 50

   Average of first 10 natural numbers?

   A 5.5 B 5 C 6 D 4.5
4. Question 4 of 50

   5 consecutive even numbers avg = 30. Smallest?

   A 26 B 28 C 24 D 22
5. Question 5 of 50

   Monthly salaries: Rs.8000,10000,12000,14000. Average?

   A Rs.11,000 B Rs.10,000 C Rs.12,000 D Rs.9,000
6. Question 6 of 50

   Average of 16,24,32,40,48?

   A 32 B 24 C 40 D 28
7. Question 7 of 50

   Average of 10 numbers is 30. One number 40 is replaced by 20. New average?

   A 28 B 30 C 25 D 32
8. Question 8 of 50

   Average of 40,50,60 is?

   A 50 B 45 C 55 D 60
9. Question 9 of 50

   If avg of a and b is 12, and a=8, find b.

   A 16 B 12 C 14 D 18
10. Question 10 of 50

    Average of 100 numbers is 50. Remove 80. New average?

    A 49.8 B 50 C 51 D 48
11. Question 11 of 50

    Average daily production: 200,250,300,350,400 units. Average?

    A 300 B 250 C 350 D 275
12. Question 12 of 50

    Average monthly rainfall (mm): 10,15,20,25,30. Average?

    A 20 B 15 C 25 D 18
13. Question 13 of 50

    Average of 45, 55, 65, 75, 85, 95 is?

    A 70 B 60 C 75 D 65
14. Question 14 of 50

    Average of 10, 20, 30, 40, 50 is?

    A 30 B 25 C 35 D 40
15. Question 15 of 50

    Average of all multiples of 5 from 5 to 50?

    A 27.5 B 25 C 30 D 22.5
16. Question 16 of 50

    Average of 5 scores: 70,80,90,75,85?

    A 80 B 75 C 85 D 70
17. Question 17 of 50

    Average of 111,222,333,444,555?

    A 333 B 111 C 222 D 444
18. Question 18 of 50

    A student scored 75,80,90,85,70 in 5 exams. Average?

    A 80 B 75 C 85 D 70
19. Question 19 of 50

    If avg of 4 numbers is 12, adding 5th makes avg 14. 5th number?

    A 22 B 18 C 20 D 24
20. Question 20 of 50

    Avg of 3 numbers = 45. Two are 40 and 50. Third?

    A 45 B 35 C 55 D 40
21. Question 21 of 50

    If avg of 8 numbers is 32, two removed (36,44). New avg?

    A 30 B 31 C 29 D 32
22. Question 22 of 50

    If average of 5 numbers is 20, their sum is?

    A 100 B 80 C 60 D 120
23. Question 23 of 50

    Average of 5 numbers is 25. 6th number added, new avg = 30. 6th number?

    A 55 B 50 C 60 D 45
24. Question 24 of 50

    Average of first 5 even numbers (2,4,6,8,10)?

    A 6 B 5 C 7 D 8
25. Question 25 of 50

    If a cricketer scores 40,60,30,80,50 in 5 innings, average?

    A 52 B 48 C 56 D 50
26. Question 26 of 50

    Average of 17,19,21,23,25?

    A 21 B 20 C 22 D 19
27. Question 27 of 50

    Average of 15, 25, 35 is?

    A 25 B 20 C 30 D 15
28. Question 28 of 50

    Average of 100, 200, 300, 400, 500?

    A 300 B 250 C 350 D 400
29. Question 29 of 50

    Average of 5,10,15,20,25,30?

    A 17.5 B 15 C 20 D 12.5
30. Question 30 of 50

    Average of first 5 odd numbers (1,3,5,7,9)?

    A 5 B 4 C 6 D 7
31. Question 31 of 50

    If average of 6 numbers is 15, what is their sum?

    A 90 B 60 C 75 D 105
32. Question 32 of 50

    6 numbers avg = 18. Remove 24. New average?

    A 16.8 B 18 C 15 D 17
33. Question 33 of 50

    Average of 6,12,18,24,30?

    A 18 B 15 C 20 D 12
34. Question 34 of 50

    Average of 0 to 10 (inclusive)?

    A 5 B 4.5 C 5.5 D 6
35. Question 35 of 50

    Average of 1,3,5,7,9,11?

    A 6 B 5 C 7 D 4
36. Question 36 of 50

    Average of 7 consecutive numbers starting from 3?

    A 6 B 5 C 7 D 8
37. Question 37 of 50

    Average of 3 numbers is 24. First two are 20 and 26. Third is?

    A 26 B 24 C 22 D 28
38. Question 38 of 50

    Average of 25,35,45,55,65?

    A 45 B 40 C 50 D 55
39. Question 39 of 50

    A batsman average 40 in 10 innings. In 11th inning scores 90. New average?

    A 44.5 B 45 C 43 D 40
40. Question 40 of 50

    Average of 88,92,78,96,84,82?

    A 86.67 B 85 C 87 D 88
41. Question 41 of 50

    Average temperature Mon-Fri: 35,37,33,39,36°C. Average?

    A 36°C B 35°C C 37°C D 38°C
42. Question 42 of 50

    If average of n numbers is A, sum = ?

    A nA B A/n C A+n D An²
43. Question 43 of 50

    Average of 33,44,55,66,77?

    A 55 B 44 C 66 D 33
44. Question 44 of 50

    Average runs in 3 days: 45,65,55. Average?

    A 55 B 50 C 60 D 65
45. Question 45 of 50

    3 numbers avg = 21. 4th added, new avg = 23. 4th number?

    A 29 B 25 C 31 D 27
46. Question 46 of 50

    Average of prime numbers less than 10 (2,3,5,7)?

    A 4.25 B 4 C 5 D 4.5
47. Question 47 of 50

    Average of first 7 multiples of 7?

    A 28 B 21 C 35 D 14
48. Question 48 of 50

    Average of 9,18,27,36?

    A 22.5 B 18 C 25 D 27
49. Question 49 of 50

    Average of 12, 14, 16, 18, 20?

    A 16 B 15 C 17 D 14
50. Question 50 of 50

    4 friends earn Rs.20000,25000,30000,35000. Average?

    A Rs.27,500 B Rs.25,000 C Rs.30,000 D Rs.22,500

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