Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

Complete the following series. It.s very logical:

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

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

I know a nine-letter word having only one vowel.
Do you ?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?

What brings you down but never up?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?