Remove two matchsticks to make the below equation correct.

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

You need to move three matchsticks to form three squares. Can you do it?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

What word is pronounced the same if you take away four of its five letters?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

How many letters are in the alphabet?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

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?