using four eights (8) and a one (1) and one mathematical symbol , create the number 100

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Make a sentence consisting of three words that have the whole alphabet.

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

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

What Word am I Looking For ?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

What four weights can be used to balance from 1 to 30 pounds?

What do you call a fish without an eye?