When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What begins with T, ends with T, and has T in it?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Solve the mathematical equation in the picture below.

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

What is the next number in the series?

15 29 56 108 208 ?

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?