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 does this mathematical rebus means ?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

Name a key which is hardest to turn.

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

What is the end of everything?

I have branches, but no fruit, trunk or leaves. What am I?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?