What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

Can you identify if it's a murder or a suicide ?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What has 13 hearts but no other organs?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

What will you call your mother's brother's brother-in-law?