Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

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 anyone tell me a word in the English dictionary which has a silent 'z'?

You need to remove two matchsticks to make the below equation true. Can you do it ?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

There is a place where if I stand up straight, I will still be considered sideways.

When can we add 2 to 11 and get 1 as the correct answer?

Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?