If a, b, c are consecutive positive integers and log (1+ac) = 2K, then the value of K isA. log bB. log aC. 2D. 1

If a, b, c are consecutive positive integers and log (1+ac) = 2K, then

1.	If a, b, c are consecutive positive integers and log (1+ac) = 2K, then the value of K isA. log bB. log aC. 2D. 1
Answer» Correct Answer - A Let ` a = x - 1, b = x, c = x+1` Now `log(1+ac)=log [1+(x-1)(x+1)]` ` = log x^(2) = 2 log x = 2 log b` ` rArr K = log b`