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

I am the first thing you need while camping.
I am always with the person named Marcos Valencia and Carrick.
But Pogba Zlatan and Rooney think I am wasteful and do not need me.
I am the second to the last thing to add when you are making a patch.

What am I?

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

There are forty elephants and they have forty-fore heads. How can this be possible?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Find the hidden tiger in the given optical illusion ?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?