In a G.P. 729, 243, 81,… find t7 .
Solution :
tn = ar n -1
a = 729, r = 243/729 = 1/3 and n = 7
t7 = (729) (1/3)7 -1
= (729) (1/3)6
t7 = 1MAHARASHTRA: 5TH 6TH 7TH 8TH 9TH 10TH 11TH 12TH New Time table
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