How many times can you subtract the number two from the number fifty?

What can go through glass without breaking it?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

Rose, Lily and Jasmine decided to buy flowers for their moms on Mother's Day. One of them bought lilies, the other roses, and the third one jasmines.
'It's funny!' said the girl with roses, 'we bought roses, jasmines and lilies, but none of us bought the flowers matching her name'.
'You're right!', said Lily.
What kind of flowers did each of the girls buy?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Count the number of squares in the picture below.

Eight of us go fourth, not back, to protect our king from an attack. What are we?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?