How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Can you place three balls such that the equation shown in the picture holds true?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Can you count the number of triangles in the given figure?

Can you replace the question mark with the correct number?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he 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?