When we see 2 but call 10?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

I am a mother. However, I never give birth.

I am a father. However, I never nurse my children.

Wandering is not possible for me, but standing still happens occurs rarely.

Who am I?

Count the number of triangles in the picture below:

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Can you find out which options fits best with the missing column?