When monkey rotate the gear, which mark will be hit 1 or 2 ?

Can you replace the question mark with the correct number in the below table sequence?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

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 ?

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

Make a sentence consisting of three words that have the whole alphabet.

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?