What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

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?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
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What have one eye but still cannot see?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

A bomb exploded in a room full of married couples and no one died. How?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

what does this below rebus represent identXQQQQQME