Find the LCM of \(\frac{4}{5}\) , \(\frac{8}{9}\) , \(\frac{5}{7}\) .
Answer & explanation
Correct answer: option 1
L.C.M. of \(\frac{4}{5}\) , \(\frac{8}{9}\) , \(\frac{5}{7}\)
= \(\frac{LCM\;of\;(4,\;8,\;5)}{HCF\;of\;(5,\;9,\;7)}\) {\(\frac{LCM\;of\;numerator}{HCF\;of\;denominator}\)}
= \(\frac{40}{1}\) = 40