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?

This is a simple one. You just have to count the number of Fs in the given sentence.

Finished Files are the result of years of scientific study combined with the experience of years.

How many did you count?

Which tank will fill first?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Which of the below owl is odd one out?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?