Question

 1, 4, 6, 5, 11, 6 . . . . . . Find the sum of first 100 terms​

Answer 1

Answer:

a=1

d=4-1=3

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

Sum = 100/2 [2x1 +(100-1)3]

=50[2+297]

=349

Step-by-step explanation:

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