exam Maths Puzzle Numerical Ability

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?

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exam Other Question

find exact value:

tan(pi/3+pi/4)
Science and medicine:
A ball is thrown upward from the roof of a building 100m tall width the initial velocity of 20 m/s. When will the ball reach the height of 80 m?


I would really appreciate some help on this, Thank you very much.