How is a fly different from a mosquito?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

A father's child, a mother's child, yet no one's son.

Who am I?

A bridge is about to collapse. There are four people P, Q, R and S on one of the sides. Before the bridge collapses, they want to cross it. Now since the bridge is too weak, it can only stand the weight of two people at a time. Also, it is night time and nothing is visible. They have just one torch with them.

Now P takes one minute to cross the bridge, Q takes two minutes to cross, R takes five minutes to cross and S takes ten minutes to cross.

The bridge will collapse in seventeen minutes. How will they be able to cross the bridge before it collapses?