13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

Can you make a six-letter word using the letters N, A and B ?

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

Assume the given figure to be a delicious doughnut. Yes, now you can concentrate more on the puzzle. So you have this delicious doughnut in your refrigerator when your friends come knocking at the door. There are eight of them. Now you have to make three cuts in this doughnut so that each one of you nine people can enjoy a piece of it. Neither you nor your friends would mind the size of their piece as long as they are getting it. How will you do it?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

What is the last thing you take off before bed?

Can you divide the below-given shape into four equal and identical pieces?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?