When we see 2 but call 10?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

what does the below rebus means?

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

With the help clues provided in the image, can you find the 5 digit key?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

In the image given, you can find several triangles. Can you count them all?

10+10 and 11+11 can give you the same answer.

Explain how?

The more you take me, the more you leave me behind.
Who Am I?