Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Can you make a six-letter word using the letters N, A and B ?

Spot the cat in the picture below

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

I cannot talk, but I always reply when spoken to. What am I?

An ant is travelling on a 1-meter-long rope at 1 cm/second but also the entire rope is being stretched by an extra 1 meter/second. Is it possible for the ant to reach at the end of the rope?

Look at the picture and find out which square is not linked with any of the other squares.

Can you find out which number multiplied by itself will give the output as 12345678987654321?

how come the second man dies?