Select the number from among the given options that can replace the question mark in the following s...........

Logical Reasoning (CPO) Number series

Select the number from among the given options that can replace the question mark (?) in the following series.

159, 146, ?, 120, 107, 94, 81

This questions was previously asked in

SSC CPO 11th Nov 2022 Shift 2

136

131

133

140

- The given series is: 159, 146, ?, 120, 107, 94, 81.

- To find the pattern, check the differences between successive numbers.

- Difference between 159 and 146: 159 - 146 = 13.

- Difference between 146 and 120: We assume the same reduction pattern, so 146 - ? = the missing number.

- Continue with the pattern:

- Difference between 146 and the missing number should be similar to the other reductions seen later.

- Compare with other numbers in the series: Difference between 120 and 107: 120 - 107 = 13.

- Difference between 107 and 94: 107 - 94 = 13.

- Difference between 94 and 81: 94 - 81 = 13.

- This consistent difference of 13 suggests the missing number is 133.

- Thus, Option 3 is correct.

Answer: Option 3, 133

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