What does below rebus means ?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

What begins with T, ends with T, and has T in it?

Make a sentence consisting of three words that have the whole alphabet.

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?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

When does a USA Potato change its nationality?

When we see 2 but call 10?

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

Find the smallest sentence with all the English alphabet.