anonymous
  • anonymous
What is the fifth term of the sequence whose first term is 10 and whose common ratio is ? a. 160 b. 50 c. 12 d. 5/8
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
The common ratio is 1/2
rishavraj
  • rishavraj
okay then \[a_5 = a_1 \times r^{5- 1}\]
rishavraj
  • rishavraj
plug a_1 i.e first term and r i.e common ratio

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anonymous
  • anonymous
what do all the letters stand for? :(
anonymous
  • anonymous
ohhhhh
rishavraj
  • rishavraj
see the nth term in geometric sequence is \[a_n = a_1 \times r^{n - 1}\]
anonymous
  • anonymous
Thanks i got it D was the answer!!
rishavraj
  • rishavraj
yup correct.... :))

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