log 10 base 8 + log 10 base 25 + 2 log 10 base 3 - log 10 base 18.
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we know that log X^n base y= n log X base y
log 10 base 8 + log 10 base 25 + log 10 base 9- log 10 base 18
log 10 base (8*25*9/18) [Log a base(X*y)= Log a base X + log a base y]
log 10 base 100
2 [10^2=100]
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