Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

Decode the movie name from the below picture?

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

Find the next number in the series below

21 32 54 87 131 ?

Find the next number in the series.
1 10 24 43 67 ?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?