I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

Chocolate costs 6 rupees and a Toy costs 5 rupees. If you have 32 rupees in total, how many chocolates and how many Toys can be purchased with that amount?

You need to arrange three 7 and mathematical symbols to form number 1?