Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

Why do Chinese men eat more rice than Japanese men do ?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

An inspection by the superintendent of St. Joseph School was scheduled on the next day. The class teacher Jenifer knew that he would be asking questions from her class and she would have to choose a pupil to answer. To offer a perfect impression over him, the teacher explained certain instructions to the students to maximise the chances of getting correct answer every time.

What did she say to the students?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

A sundial has the fewest moving parts of any timepiece. Which has the most?

It belongs to you, but other people use it more than you do. What is it?