A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Decode below rebus
D
N
A
T
S , D

Can you count the number of triangles in the given picture?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

What does this rebus mean?

O
N
C
E
TIME

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

How many words can a pen with half refill write?

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?