A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

How can you take 2 from 5 and leave 4?

Look at the picture and find out which square is not linked with any of the other squares.

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

Can you find the key in the picture below?

Move four matchsticks to the below square to form three squares?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15