Can you find out the remainder when 3^300 is divided by 5?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

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

I am sure no one can have two things for dinner. what are they?

What does the below rebus riddle means?

Whats the next number in the below number sequence pattern.

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

What do you call a fish without an eye?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?