Which Travels Faster? Solve below famous picture riddle:

When monkey rotate the gear, which mark will be hit 1 or 2 ?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

If Rajina's daughter is my daughter's mom, who am I to Rajina?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

I always drive my customer away.

Who am I?

What's a single-digit number with no value?