What does below rebus means ?

What does this say?

XLR8

What do you get if you add 2 to 100 four times?

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

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?