The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

If six children and two dogs were under an umbrella, how come none of them got wet?

What does a man do only once in his lifetime, but women do once a year after they are 29?

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?