Question

Plz solved this Newmerical​

Answer 1

Answer:

an = a+(n-1)d

207.50 = 50 +(n-1)17.50

157.5 = 17.5n -17.5

17.5n = 175

n = 10

Answer 2

An = A + (n-1) × d

or, 207.50 = 50 + (n-1) × 17.5

or, (207.50 - 50)/17.5 = (n-1)

or, 9 = n - 1

or, n = 9+1 = 10