a2zinterviews

31.	10, 50, 13, 45, 18, 38, ?, ? What two numbers should replace the question marks?

Answer

25, 29. There are two alternate sequences: start at 10 and add 3, 5, 7; start at 50 and deduct 5, 7, 9.

32.	Which number is the odd one out? 9654 4832 5945 7642 7963 8216 3649

Answer

3649 In all the others multiply the first two digits together to produce the number formed by the last two digits.

33.	1, 3, 4, 7, 11, 18, 29, ? What number should replace the question mark?

Answer

47 Each number is the sum of the previous two numbers, ie 18 + 29 = 47.

34.	70 91 120 14 13 24 5    7    ? What number should replace the question mark?

Answer

5 70 ÷ 14 = 5; 91 ÷ 13 = 7, 120 ÷ 24 = 5;