Take away the whole and some still remain. What is it?

Can you tell a 3D object that has just two surfaces?

You need to arrange three 7 and mathematical symbols to form number 1?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

What type of tree can I carry in my hand?

I have Rs.50 and I spend it in the way as below.

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your