If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

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?

You along with your friend are standing in front of two houses. Each of those houses inhabits a family with two children.

Your friend tells you the below two facts:
1) On your left is a family that has a boy who likes accounts but the other child loves science.
2) On the right is a family with a seven-year-old boy and a newborn baby.

You ask him, "Does either of the family have a girl?"

To this, he replies, "I am not quite sure. But can you guess that? If you are right, I will give you $500."

Which family do you think is likely to have a girl?

What can go up a chimney down, but can’t go down a chimney up?

Can you count the number of triangles in the given picture?

Which point will the car reach to go out?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?