Numerical Reasoning Questions and Answers

Numerical Reasoning Questions and Answers

136)	Identify the missing number or letter within the series. T, ? R, N, P A. U B. T C. V D. W E. N View answer Answer: E Explanation: The interval between the letters alternates between incrementing by 4 and decrementing by 2. Therefore the second letter is ‘P’.

137)	Identify the missing number or letter within the series. 1, 3, ?, 9, 27, 243 A. 4 B. 3 C. 5 D. 6 E. 7 View answer Answer: B Explanation: The difference between the numbers in this series increases by 1 each time: -19, - 20, -21, -22. The third number in the series is therefore 110.

138)

Identify the missing number or letter within the series.
54, ?, 28, 18, 10, 4

A. 36
B. 35
C. 37
D. 41
E. 40

View answer

Answer: E

Explanation: Each number in the series is a multiple of the two preceding numbers. The third number in the series will be 3 since 1 * 3 = 3. Whenever you see a large increase in the numbers in a series (for example, 9, 27, 243) this indicates that multiplication of the numbers themselves or of their differences defines the series.

139)	Identify the missing number or letter within the series. 3, 5, 15, 17, 27, ?, 39 A. 31 B. 29 C. 25 D. 35 E. 30 View answer Answer: B Explanation: The difference between the numbers in this series alternates between 2 and 10. Therefore the sixth number in the series is 29.

140)	Identify the missing number or letter within the series. 195, ?, 180, 170, 165 A. 192 B. 188 C. 185 D. 190 E. 182 View answer Answer: C Explanation: The difference between the numbers in this series alternates between -5 and -10. Therefore the second number in the series is 190.