A four digit number is to be formed using the digits 1 to 7All digits of the number are different and repetition is notallowed. 1. How many such numbers can be formed ? 2. How many such numbers are divisible by 4 ?

Ques:- A four digit number is to be formed using the digits 1 to 7 All digits of the number are different and repetition is not allowed.
1. How many such numbers can be formed ?
2. How many such numbers are divisible by 4 ?

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