Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Find the next number in the series

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

There is a place where if I stand up straight, I will still be considered sideways.

What does an Island and the letter T have in common?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

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

If it took eight men ten hours to build a wall, how long would it take four men to build it?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

In the given picture, in how many ways can you read the word "Tiger"?

A man was telling some of his war stories to his grandchildren.
"When the World War I was on the verge of end, I was awarded for my bravery for I had saved a group of my men." He coughed and then added, "When we were fighting in northern France, an enemy soldier threw a grenade at us. Before it could explode, I picked it up and threw it away. For my act of bravery, right before the war ended, A General gave me a sword engraved with the words "Awarded for Display of Bravery and Heroism in World War 1"."

Hearing this, one of the grandson spoke up. "Grandpa, this is not a true story. It can"t be true!"

The truth is that it was not. How did the grand children know it?