One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

What is the next number in the series?

15 29 56 108 208 ?

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

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?

What does below chemistry rebus means?

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

What does below Rebus say?

XLR8

What is the word or phrase?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

How can you take 2 from 5 and leave 4?