Spot 5 differences in two Christmas tree below:

What has a bottom at the top?

What Does this text mean:

important=important

What number should come in place of the question mark below?

When it's bad luck to meet a black cat?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

How many triangles are there on the puzzle below?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

A bomb exploded in a room full of married couples and no one died. How?