Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

What number do you get when you multiply all of the numbers on a telephone's number pad?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

Can you replace the question mark with the correct number in the below table sequence?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

What is common among 11, 69, and 88?

How can you make a TV, a bed, a dog, and a car liquid?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?