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Consider the given number pattern and identify the missing number.

  • A

    21

  • B

    22

  • C

    15

  • D

    25

The correct answer is 25.

Solution:

Considering the given number pattern.

Here, the numbers are decreasing.
So, to find the missing number, we first find the rule.

Note that:
40 – 5 = 35
35 – 5 = 30
30 – 5 = 25
25 – 5 = 20

So, the rule is "subtract 5".


Then, the missing number is 25.