A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

81 x 9 = 801. What must you do to make the this equation true?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

A family is trapped in a jungle. There is a bridge which can lead them to safety. But at one time, the bridge can only allow two people to pass through. Also, all of them are afraid of the dark and thus, they can't go alone.

Father takes 1 minute to cross, the mother takes 2 minutes, the son takes 4 and the daughter takes 5 minutes. While crossing the time taken will be according to the slower one. How can they all reach the other side in the minimum possible time?