for what value of k will, K + 9 , 2 k - 1 and 2 k + 7 are the consecutive terms of an ap
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i have done it in picture
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Aishkhokher:
but how can you please explain
see if three terms a b and c are in ap then we can write them as b= (a+c)/2
is it level of 10th class
you can get it from b-a=c-b => 2b = a+c => b = (a+c)/2
yes yes it is level of 10th class
sorry for > that means it replies
ok
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