Which Travels Faster? Solve below famous picture riddle:

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Why is 6 afraid of 7?

Two old friends, Jack and Bill, meet after a long time.

Three kids
Jack: Hey, how are you, man?
Bill: Not bad, got married and I have three kids now.
Jack: That's awesome. How old are they?
Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.
Jack: Cool..But I still don't know.
Bill: My eldest kid just started taking piano lessons.
Jack: Oh, now I get it.

How old are Bill's kids?

I am quite hot but become too cold if you remove the first two letters. What am I?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Solve the puzzle by telling what does below picture means.

You can see three almost identical images below. Can you spot the odd one out from them?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?