The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

If your uncle’s sister is not your aunt, what relation is she to you?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

Can you write down eight eights so that they add up to one thousand?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

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?