Question

how many terms of the arithmetic sequence -117, -114, -111... make the sum 0​

Answer 1

Answer:

40

Step-by-step explanation:

a=-117

d= -114-(-117)= 3

a+(n-1) d=0

=>-117+(n-1) 3=0

=>(n-1) 3=117

=>n-1=39

=>n=40

Answer 2

Answer:

Sum of 79 terms of the A.P -116,-114,-111... will be equal to 0