What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

Replace the question mark with the number below given a simple math problem.

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

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

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

Can you find out which options fits best with the missing column?

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?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?