The first term of a g.p. is 27 and 8th term is 1/81. find the sum of its first 5 terms. NO SPAM.
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1
Answer:
HERE,
a=27
ar^n-1=1/81
27×r^7=1/81
r^7=1/81×1/27
r=1/3
sum=27(1-1/3^5)/1-1/3
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0
Answer:
nothing yes nothing
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