What has many keys but can’t open a single lock?

By using all numbers, i.e. 123456789 and subtraction/addition, operators number 100 can be formed in many ways.
Example: 98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition use of the number 32 is a must. Then there are limited solutions.
One of such solution is: 9 - 8 + 76 + 54 - 32 + 1 = 100

Can you tell me any other solution?

Solve this riddle by finding the odd one out from the rest.

Rearrange the letters in "new door" to make one word.

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Out of four images which one is the odd one out?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

What does below pictogram mean?