How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

I have branches, but no fruit, trunk or leaves. What am I?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

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

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

What is the last thing you take off before bed?

What brings you down but never up?

Count the number of triangles in the given picture.

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

What does this rebus means ?