Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

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?

Why did Buffon take the goal with him after every Juventus match?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

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

Rumel, A detective who was mere days from cracking an international smuggling ring has suddenly gone missing. While inspecting his last-known location, you find a note:

710 57735 34 5508 51 7718

Currently, there are 3 suspects: Bill, John, and Todd. Can you break the detective's code and find the criminal's name?

Do You See It?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?