Can you find out which number multiplied by itself will give the output as 12345678987654321?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

I’m tall when I’m young, and I’m short when I’m old. What am I?

A Car is crossing a bridge 2 miles long. The bridge can only hold 10000 lbs, which is the exact weight of the car. The Car makes it half way across the bridge and stops. A bird lands on the car. Does the bridge collapse? Explain.

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?