Question

an = 5+3n -3. find the value of this sequence ​

Answer 1

Answer:

T

n

=5n−3

T

1

=5(1)−3=2

T

2

=5(2)−3=7

d=T

2

−T

1

=7−2=5

a=T

1

=2

S

20

=

2

20

[2a+19d]

=10(4+95)

=990.