The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

Before Mount Everest was discovered, what was the highest mountain in the world?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Count the number of triangles in the given picture.

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

Can you find any error in the following sentence?

A taxi was standing outside a fort at night. A man came out of the fort, opened the gate and hit the taxi driver killing him instantly. He took all the money out of the meter and started running till he was caught by a local sheriff.

If a wheel has 54 spokes, how many spaces are there between the spokes?