Question

The 100th term of 70, 130, 190... is ?

Answer 1

Answer:

a1=>70

a2=>130

d=>a2-a1=>130-70=>60

a100=>a+99d

=>70+99(60)

=>70+5540

=>5610

Answer 2

Answer:

Step-by-step explanation:

Let Common difference be d.

d is difference between two terms that is 130-90 = 40

d=40

Let S be the 100th term

n be the term you want.

a be the first number of the series

Then using the formula,

S nth = a+(n-1)*d

S = 70+99*40

S=4030