exam Maths Puzzle Numerical Ability

HELP PLEASE!!! A rectangle is 19 by 26. fing the angle between the diagonal and the longer side.

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exam Other Question

Permuation P= n! / (n-r)! or Combination C= n! / (n-r)! r!

How many different committees can be formed from 6 teachers and 50 studentsif the committee is to consist of 2
The measure of an interior angle of a regular polygon is given. Find the number of sides in each polygon

1.) 120 2.)150

I am at a complete lost here, could someone help me please? Where would I start?