Question

find the maximum sum of AP 55,50,45​

Answer 1

Step-by-step explanation:

sum of ap = n/2(afirst+alast)

here d= -5

afirst=55

Alast=0

we will get maximum sum when all terms >0

0 =55+(n-1)-5

n=12

Sum=12/2(55+0)

=6×55

=330

Answer 2

Answer:

330

Step-by-step explanation:

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