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?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Can you write down eight eights so that they add up to one thousand?

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?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

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

What building has the most stories?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?