Solve this riddle by finding the odd one out from the rest.

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

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

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

What is red and smells like blue paint?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

what's the probability of getting a king or a queen from a pack of 52 cards?

Replace the question mark with the correct number in the below-given picture?