I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Which tank will fill first?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

What's the only room from which no one can enter or leave

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

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

What Word am I Looking For ?

There are 3 apples in the basket and you take away 2. How many apples do you have now?