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Find the 7th and nth term of GP: 0.4, 0.8, 1.6,...

7th term = 0.4 x 26
               = 0.4 x 64 
               = 25.6
nth term = 0.4 x 2n-1

hope this ans helps!!!​
 
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from the above GP 
a=0.4 and r =2
so 7 th term= 0.4 *26=25.6
similarly nth term = 0.4 *2n-1
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it is totally wrong
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