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

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Steffi's daughter Jazelle needs to be picked up from school every day.
Steffi asks one of her colleagues to pick up Jazelle from the school. Steffi devised a password system to confirm that Jazelle goes with the correct colleague only.

The password on Monday was SJM16.
The password on Wednesday was TAW39.

What will the password be for Friday?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

You can use any mathematical symbols in the space provided to make all above algebraic expressions true.

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

What has hands, but can’t clap?

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.

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