There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

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?

Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
The colour of each hat is purely random. They could all be green, blue, or any combination of green and blue.
They need to guess their own hat colour by writing it on a piece of paper, or they can write 'pass'.
They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
What is the best strategy?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

Count the number of triangles in the given picture.

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

Can you make four (4) nines (9) equal 100?

Where do you go to learn how to make ice cream?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Can you name some countries which do not have the alphabet 'A' in them?