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?

I’m tall when I’m young, and I’m short when I’m old. What am I?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

What is at the end of a rainbow?

Why do you find that most of the buildings are deprived of the 13th floor?

Can you quickly find which two matchstick figures are identical?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?