What occurs twice in a week, once in a year but never in a day?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Can you fill the blank with the correct number?

6 30 870 756030 _____

What is the fastest way to double your money?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

A spaceship was lost. The detective was given a piece of paper. This was the location of the spaceship! This is what the slip had scribbled on it:
Juice, Umbrella, Potato, Ice, Tomato, Elephant, Rice.

Where is the spaceship?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What has hands, but can’t clap?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?