The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

I am white when I am dirty, and black when I am clean. What am I?

Which alphabet letter is a question?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

What is the next number in the series?

15 29 56 108 208 ?

I can be cracked, made, told, and played. What am I?

There are 4 big houses. They are made from the materials: red marble, green marble, white marble and blue marble.

* Mrs Jennifer's house is somewhere to the left of the green marble one and the third one alone is white marble.
* Mrs Sharon owns a red marbles house and Mr Cruz does not live at either end, but lives somewhere to the right of the blue marbles house.
* Mr Danny lives in the fourth house, while the first house is not made from red marble.

Who lives where, and what is their house made from?