Question

4 digits 1,2,4 and 6 are selected at random to form a 4 digit number, what is the probability that number so formed would be divisible by 4?​

Answer 1

If the last two digits of a whole number are divisible by 4 , then the entire number is divisible by 4.

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Answer 2

A number is divisible by four if last two digits are divisible by 4

1,2,4 and 6

(12,16,24,64)⟶ Last two digits (4 Ways)

Left over Two numbers Two brackets.

Total possible numbers=8

Total possible 4 digit numbers =4!=24

Probablity = 24/8=3/1