I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

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

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

In the image below, can you find the value of an angle(y)

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?