exam Maths Puzzle Numerical Ability

find exact value:

tan(pi/3+pi/4)

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exam Other Question

Find 3 non zero numbers such that the sum of the squares of two of the numbers equals the square of the 3rd number. I nned to find five different sets (three numbers) What is a five-digit number divisible by both 2 and 5?
What is a three digit number divisible by 2 and not 4?
What is a three-digit number not divisible by 2, 3, or 5?