Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

10+10 and 11+11 can give you the same answer.

Explain how?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

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

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

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?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

Solve the rebus riddle in the picture below.