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 = ?

What can you catch but never throw?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Below rebus represent famous DiCaprio movie. Can you name it?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

When monkey rotate the gear, which mark will be hit 1 or 2 ?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

I make two people out of one. What am I?