Question

find the sum of the following Aps:

0.6,1.7,2.8,...... to 100 terms ??


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Answer 1

Step-by-step explanation:

Here a = 0.6

n = 100

and d = 1.7 - 0.6 = 1.1

we know that sn = n/2 {2a + (n-1)d }

= 100/2 {2×0.6 +(100 -1) 1.1}

= 50 { 1.2 + 99 × 1.1 }

= 50 { 1.2 + 108.9}

= 50 × 110.1

= 5505