ridgeboy36
What is the sum of the geometric 4, 24, 144,... if there are 7 terms? Answers to choose from.
a)411,772
b)308,829
c)159,964
d)119,973



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ridgeboy36
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@sauravshakya

ridgeboy36
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@TWrx

ridgeboy36
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@Spectrum

ridgeboy36
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@sauravshakya can you help me please

sauravshakya
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There first term is 4 and common ratio is 24/(4) =6
Now,
Sn = a(r^n 1)/(r1)

sauravshakya
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Does it help?

ridgeboy36
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yes

sauravshakya
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so, what did u get?

ridgeboy36
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i got 159,964

ridgeboy36
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is this correct @sauravshakya ?

sauravshakya
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very correct

ridgeboy36
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thank you

sauravshakya
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welcome