Q. 55.0( 1 Vote )

# How many consecutive terms starting from the first term of the series(i) 3 + 9 + 27 + … would sum to 1092 ? (ii) 2 + 6 + 18 + … would sum to 728 ?

(i) First term = 3

Common ratio = = 3

Sum of n terms =

Sum of n terms =

1092 =

728 =

729 =

n = 6

(ii) First term = 2

Common ratio = = 3

Sum of n terms =

728 =

728 =

729 =

n = 6

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