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?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

Which letter of the alphabet has the most water?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Which alphabet letter is a question?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Can you count the number of triangles inside a triangle?