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easyMCQSSC CGL2026General Intelligence & Reasoning
1 mark

Select the number from among the given options that can replace the question mark (?) in the following series.
264,136,72,40,?

  1. A
    20
  2. B
    24
  3. C
    26
  4. D
    28

Solution & Step-by-step Explanation

Let's examine the mathematical operation linking each consecutive term:
2
264

+4=132+4=136

2
136

+4=68+4=72

2
72

+4=36+4=40

Following this uniform division logic:

2
40

+4=20+4=24
Hence, the next number in the sequence is 24.

Practice this question

Try it yourself before checking the explanation above.

Select the number from among the given options that can replace the question mark (?) in the following series.
264,136,72,40,?
A
20
B
24
C
26
D
28

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