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8. Sequences and Series
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શ્રેણી $0.7, 0.77, 0.777, ......$ ના પ્રથમ $20$ પદોનો સરવાળો કેટલો થાય ?
A
$\frac{7}{{81}}\,(179\, - \,{10^{ - 20}})$
B
$\frac{7}{9}\,(99\, - \,{10^{ - 20}})$
C
$\frac{7}{{81}}\,(179\, + \,{10^{ - 20}})$
D
$\frac{7}{9}\,(99\, - \,{10^{ - 20}})$
Solution
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Standard 11
Mathematics