During which month do people sleep the least?

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?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

A sundial has the fewest moving parts of any timepiece. Which has the most?

What does this simple rebus mean?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

What is the difference between a jeweller and a jailer?