Find the last term of a G.P whose first term is 9 and common ratio is ( 1/3 ) if the sum of the terms of the G.P is ( 40/3 )
Choose one: A) 1/3 B) 2/5 C) 1/4 D) 2/3 E) 4/5
Sum of the G.P . = ( First term - r * last term)/1 – r   40/3 = 9 – 1/3 ( last term ) / 2/3   Last term = ( -40/3*2/3+9 ) * 3 = - 80/3 + 27 = 1/3   1/3NSWER:1/3
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Find the last term of a G.P whose first term is 9 and common ratio is ( 1/3 ) if the sum of the terms of the G.P is ( 40/3 )