Math, asked by shainkv480, 1 month ago

The sum of arithmetic sequences is 51+52+53+....+70

Answers

Answered by himanshukumar67414

2

Step-by-step explanation:

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Answered by teza15

2

Answer:

53

Step-by-step explanation:

n=70

d=1

X1=51

x70=dn+f-d

=1×70+51-1

=70+50

=120

Sn=n/2 (X1 + xn)

= 70/2×51+120

=35×171

=5985

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