Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Prove that the below maths equation is true.

8 + 8 = 91

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?

What can you catch but never throw?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

What brings you down but never up?

What is black when you buy it, red when you use it, and gray when you throw it away?