Find the last number in the series below:

voN luJ yaM raM ---

Spot the cat in the picture below

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Prove that twice of ten is the same as twice of eleven.

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Remove two matchsticks to make the below equation correct.

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).