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?

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

When we see 2 but call 10?

Spot 5 differences in two Christmas tree below:

what one word does the below rebus identifies?

You have 1023 apples and 10 bags. You have to distribute these apples in these 10 bags in any way you choose. But when I ask for a certain number of apples you have to give them in terms of bags without transferring the apples from other bags. How do you distribute the apples?

How many bananas can you eat if your stomach is empty?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

What am I?