Q. |
How many 5 digit numbers s which are divisible by 4 can be formed using the digits 1, 2, 3, 4, and 0? |
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A. 36 |
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B. 48 |
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C. 30 |
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D. 24 |
Repetition is not allowed as we have to use all the digits
To be divisible by 4, the last 2 digits must be: 12, 04, 20, 24, 32, 40
Keeping 04 or 20 or 40 in the last two places, numbers = 3 × 2 × 1 × 3 = 18
Keeping 12 or 24 or 32 in the last two places, numbers = 2 × 2 × 1 × 3 = 12