When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Can you find the company name in the pictogram below?

What does this mean?

CCCCCCC

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Be active and find the killer in the picture Riddle below.

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Replace the question mark with the correct number in the below-given picture?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

What can you catch but never throw?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.