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

You are driving down the road in your car on a wild, stormy night, when you pass by a bus stop and you see three people waiting for the bus

An old lady looks as if she is about to die.
An old friend who once saved your life.
The perfect partner you have been dreaming about.
Knowing that there can only be one passenger in your car, whom would you choose?

Find the missing number in the image below.

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

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?

Replace the question mark with the number below given a simple math problem.

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

Can you place three balls such that the equation shown in the picture holds true?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?