What word is pronounced the same if you take away four of its five letters?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

When 99 is considered higher than 100?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

How many triangles can you find in this given picture?

How many times can you subtract the number two from the number fifty?

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?

A cat, a dog and a monkey were stolen. 3 suspects got caught: Harish, Manoj and Tarun. All we know is each person stole one animal, but we do not know who stole which. Here are the investigation statements. Harish said: Tarun stole the cat. Manoj said: Tarun stole the dog. Tarun said: They both were lying. I did not steal the cat or the dog. Later on, the police found out the man who stole the monkey told a lie. The man who stole the cat told the truth. Can you find out who stole which?

How many words can a pen with half refill write?