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Question

How many numbers from 1 to 100 are there each of which is not only exactly

divisible by 4 but also has 4 as a digit ?


Options:
A .  7
B .  10
C .  20
D .  21
E .  More than 21
Answer: Option A

The numbers from 1 to 100 which are exactly divisible by 4 are 4, 8, 12, 16, 20, 24, 

28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100.

But each number should have 4 as its digit.

`:.`  The required numbers are 4, 24, 40, 44, 48, 64, 84. Clearly, there are 7 such numbers.



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