Can you find the missing piece of the Porsche?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?

What question can you never answer yes to?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

When it's bad luck to meet a black cat?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

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 type of tree can I carry in my hand?