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 ?

You see me once in June, twice in November, and not at all in May. What am I?

What is the next number in the series?

15 29 56 108 208 ?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

John was drowned by he was not wet. How?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Can you count the number of quadrilaterals in the picture below?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

Spot what is wrong here in below Picture?

There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?