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Swetha

With the four numbers 1, 2, 3, 4, how many four digited numbers are possible that are divisible by 4. ? (Repetition of numbers is allowed)

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Mam, pls solve this puzzle also. its important for my infy preparation. pls help me guys. i am stuck in many puzzles.Q) With the four numbers 1, 2, 3, 4, how many four digited numbers are possible that are divisible by 4. (Repetition of numbers is allowed)rgds,Swetha

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Answer : 64

Solution:

If a number is to be divisible by 4, the last 2 digits of the number must be divisible by 4.

So, the only numbers that are possible to be placed at last 2 places of the number are:

12

24

32

44 (Since repetition of numbers is allowed)

Any of the numbers 1, 2, 3, 4 ( 4 possibilities) can be selected to be put in the second place of number.

Any of the numbers 1, 2, 3, 4 ( 4 possibilities) can be selected to be put in the first place of number.

In total, there are 4 * 4 * 4 = 64 possibilities that satisfy the above requirements.

Correct me guys - if I am wrong anywhere...

Best Wishes...Chetana

www.ChetanaS.com

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