What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

You walk into an old horror house. It has no power or plumbing. Once inside, you see three doors. Each door has a number on it. Behind each door is a way for you to die. Behind door number one, you die by getting eaten by a lion. Behind door number two, you die by getting murdered. Behind door number three, you die by an electric chair. You can’t turn back, so you have to go through a door. Which door do you go through?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

What number should come in place of the question mark below?

Which wheel of car does not rotate when you turn your car right?

John leaves home and then he takes three right turns. John wants to return to home but he was scared of Jacob, who is wearing a mask.

What is John Situation ?