Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

In the picture given below, can you find out which digit will take place of the question mark?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

What do you see in the given picture?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?