Which five letter word can be added at the end of below word to form a
valid word?

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An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

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?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

Replace the question mark with the number below given a simple math problem.

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

Can you make a six-letter word using the letters N, A and B ?

Prove that the below maths equation is true.

8 + 8 = 91

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?