What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

What is the below Rebus indicate?

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?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

I travel all around the world but always stay in the corner. What am I?

What English word has three consecutive double letters?