Which is faster, Heat or Cold ? Explain.

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

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?

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?

Be active and find the killer in the picture Riddle below.

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

I have branches, but no fruit, trunk or leaves. What am I?

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.