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Question

The sum to infinity of 17+272+173+274+...is

A
15
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B
724
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C
548
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D
316
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Solution

The correct option is C 316
17+272+173+274...
=(17+173+175+...)+(272+274+276+...)
=171172+2⎢ ⎢ ⎢ ⎢1721172⎥ ⎥ ⎥ ⎥ [Sum of infinite GP =a1r]

=748+248
=948
=316

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