1.

If the 2nd, 3rd and 4th term in a GP are 12, 36 and 108 What is the 1st term and the common ratio

Answer»

ANSWER:

ar=12 EQ 1

ar^2=36 eq2

ar^3=108 eq 3

eq 2 / eq1

ar^2/ar 36/12

R =3

a=4



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