1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

What is the Surname of Barbie Doll?

I have Rs.50 and I spend it in the way as below.

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H