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?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What's a single-digit number with no value?

You are given a set of weighing scales and 12 marbles. The scales are of the old balance variety. That is, a small dish hangs from each end of a rod that is balanced in the middle. The device enables you to conclude either that the contents of the dishes weigh the same or that the dish that falls lower has heavier contents than the other. The 12 marbles appear to be identical. 11 of them are identical, and one is of a different weight. Your task is to identify the unusual marble and discard it. You are allowed to use the scales three times if you wish, but no more. Note that the unusual marble may be heavier or lighter than the others. You are asked to both identify it and determine whether it is heavy or light

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Using Only Five 5's and any mathematical operator make sum as 37

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1