What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

What is the centre of gravity?

I have branches, but no fruit, trunk or leaves. What am I?

Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one?

5 $ 4 $ 3 $ 9 = 4215
6 $ 9 $ 2 $ 6 = 3816
4 $ 7 $ 3 $ 3 = 1122
7 $ 2 $ 7 $ 4 = ____

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

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?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

What does a man do only once in his lifetime, but women do once a year after they are 29?

Can you place three balls such that the equation shown in the picture holds true?