Find out the missing number in the picture attached:

Take away the whole and some still remain. What is it?

O_er_t_o_

Complete the missing letters of the given word.

81 x 9 = 801. What must you do to make the this equation true?

What does this mean?

CCCCCCC

Can you write down eight eights so that they add up to one thousand?

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.