what does the below rebus means?

What does does this rebus picture means ?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

Can you make four (4) nines (9) equal 100?

I throw two dice simultaneously.

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

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

John was piloting a plane behind a car but was never able to overtake it. Why?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Can you solve the below tricky visual equation?