exam Maths Puzzle Numerical Ability

How many 13-card hands having exactly 11 diamonds can be dealt?

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exam Other Question

Please help me with the following problem:
If we extablish an identity:
(cos^2 A)/(1 + sin A) would equal which of the following?
1. cos^2 A + cot A cos A
2. 1 + sin A
3. 1 - sin A
4. 1
Thank you, Lennie the meassure of one triangel is 28 more than the measure of the smallest angel of the triangle. the measure of the 3rd angel is twice the measure of the smallest angel. find all 3 measures.