How can you write nineteen in a manner that if we take out one, it becomes twenty?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?

They are three errirs in this question. Can you find them?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

What runs around the whole yard without moving?

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

What does below rebus means ?

Keyboard words are not in alphabetical order, Why?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?