Question

2, 3,1= 5
2,4,1=7
2,5,1=?

Answer 1

Answer:

» 2, 3, 1 = 5 ... (2 × 3 - 1)

» 2, 4, 1 = 7 ... (2 × 4 - 1)

» 2, 5, 1 = 9 ... (2 × 5 - 1)