Math, asked by sinanmpclr, 4 months ago

what is the sum of 3+7+11+15+19+...........+159

Answers

Answered by 40athirasajeevan

4

Step-by-step explanation:

Sn = n/2 [2a+(n-1)d]

s159= 159/2 [2× 3 (159-1) 4]

=159/2 [6 + 158*4)

=159/2 [6+632]

= 159/2 × 638

=159*319

= 50721

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