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  • 20-03-2020
  • Mathematics
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lordsonmyk
lordsonmyk lordsonmyk
  • 20-03-2020

Answer:

b = 363

Step-by-step explanation:

Sum of a geometric Progression is expressed as attached.

a = 3 = the first term

r = 3 = the common ratio

n = 5 = number of term

Sum of GP = a(r^n - 1)/ r-1

= 3(3^5 - 1)/ 3-1

= 3(234 - 1) / 2

= 3(242) / 2

= 726/2

= 363

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