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

What has lots of eyes, but can’t see?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

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?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

I am an odd number. Take away a letter and I become even. What number am I?

What word begins and ends with an E, but has only one letter?

Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?