Question

Find S 10 for an A.P 1/6 1/4 1/3

Answer 1

Step-by-step explanation:

here first term is = a= 1/6

d= 1/4-1/6=1/12

$Sn = \frac{n}{2}(2a + (n - 1)d \\ S10 = \frac{10}{2}[ (2 \times \frac{1}{6} ) + 9( \frac{1}{12} )] \\ = 5( \frac{1}{3} + \frac{3}{4} ) \\ = 5( \frac{4 + 9}{12} ) \\ = \frac{65}{12}$

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