Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

A couple went on a climbing trip. But only the husband returned from the vacation and said that his wife slipped off while climbing and died. On investigating, the local sheriff arrested him saying, 'Your travel agent called. You murdered your wife.'

The man did not inform anyone about the trip. Then how was the agent so sure that it was a murder?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

Which digit occurred maximum times between the number 1 and 1000?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

A worker is to perform work for you for seven straight days. In return for his work, you will pay him 1/7th of a bar of gold per day. The worker requires a daily payment of 1/7th of the bar of gold. What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?

Count the Triangle in the figure given below: