The centre of the third figure is empty. What digit should fit inside?

I have Rs.50 and I spend it in the way as below.

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

At a Society election for president, precisely 963 votes were cast.
There is a total of 4 candidates that participate in the election.

The winning candidate exceeds the opponents by 53, 79 and 105 votes.

How many votes do each candidate gets?

Can you find the dog hidden in a group of pandas?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

Before Mount Everest was discovered, what was the highest mountain in the world?