Study the number pattern. Which set does the number 77 belong to? Give your answer in number. (Eg Set 1 = 1)
Set 1: 18, 27, 36, 45
Set 2: 15, 20, 25, 30, 35, 40, 45, 50
Set 3: 14, 21, 28, 35, 42, 49
Pattern:
Set 1: Increase of 9 to get the next number.
18, 27, 36, 45, 54, 63, 72, 81
Set 2: Increase of 5 to get the next number.
15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80
Set 3: Increase of 7 to get the next number.
14, 21, 28, 35, 42, 49, 56, 63, 70, 77
Number 77 belongs to Set 3.
Answer(s): 3