What is more useful when it is broken?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

What is the next number in this matchsticks series riddle?

Why is Saturday stronger than Monday?

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?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

1. Where does Easter come from before Valentine's Day?

2. Do you know what is in the middle of Valentine's?

3. What did the lady bee say to the man bee on the occasion of Valentine's Day

Can you count the number of triangles in the given figure?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?