It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

What is the next number in this series?

4,12,84,3612....

How many times in a given day, minutes and hour clock comes in a straight line ?

Rose, Lily and Jasmine decided to buy flowers for their moms on Mother's Day. One of them bought lilies, the other roses, and the third one jasmines.
'It's funny!' said the girl with roses, 'we bought roses, jasmines and lilies, but none of us bought the flowers matching her name'.
'You're right!', said Lily.
What kind of flowers did each of the girls buy?

I have an eye but still cannot see.

Who am I?

What question can you never answer yes to?

Move three sticks of the spiral below to form a square.

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

What has many keys but can’t open a single lock?