Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

O_er_t_o_

Complete the missing letters of the given word.

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What has 13 hearts but no other organs?

What Adam and Eve do not have but the rest of the people have?