Question

find S10 for an a.p. 1/2. 3/2. 5/2​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

a = 1/2

d= a2-a1= 3/2-1/2 = 2/2

d=1

n=10

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

S10=10/2{2(1/2)+(10-1)1}

=5(1+9)

S10=5(10)

S10=50