MBA Exam

What is the least perimeter of an obtuse-angled
triangle with integer sides, whose one acute angle is twice the other?...plz post approach

1) 45
2) 56
3) 65
4) 77

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MBA Other Question

A natural number consists of only 0’s and 1’s. If the number is divisible by 375, then what is the least possible number of 0’s and 1’s in the number respectively?

1) 3 and 6
2) 6 and 3
3) 9 and 4
4) NOT
In how many ways can three couples sit in a circle such that no pair of wife and husband are opposite each other.#And every guy has one wife...and every wife has one husband Approach please...

1) 96
2) 72
3) 64
4) 48