It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

How many times do a clock's hands overlap in a day ?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What does this mathematical rebus means ?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Which city is three-fifths chick two third cat and 50% goat?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?