why number 8549176320 is one of a kind?

When is the top of a mountain similar to a savings account?

What has many teeth, but cannot bite?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

What is the Surname of Barbie Doll?

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?