I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

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

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

Using eight eights and addition only, can you make 1000?

If your uncle’s sister is not your aunt, what relation is she to you?

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

What has 88 keys?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C