# Question: What is the next number of this number sequence 27, 37, 47, _Â Puzzle

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**Correct Answer: 57**

By using arithmetic progression (AP) series logic formulaÂ

a,a+d,a+2d,a+3d,â€¦â€¦â€¦.

In this question, a =27

d – difference between the first and second number

d= 37- 27=10

We find out the fourth number,

a +3d = 27 + 3(10)

a + 3d = 27+ 30

a + 3d = 57

**So 57 is the next term in the series.**

Also read: Five Sisters in a Room Puzzle Riddle