If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

Decode below rebus
D
N
A
T
S , D

A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

What happened when the wheel was invented?

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?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

What is the next shape from answers A, B, C, and D figure?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

What is the next number in this matchsticks series riddle?