Which term of the AP . 27, 24, 21, is zero?

27,24,21

d=24-27=-3 a=27

let nth term=0

a+(n-1)d=0

27+(n-1)-3=0

(n-1)-3=-27

n-1=9

n=10

Step-by-step explanation:

answer: for each 3 girls there is 2 boys . 3: 2

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