What is the L.C.M. of 10/21, 20/63, 55/56 ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 220/7
When taking LCM of any fractions we take LCM of numerators and divide it by HCF of denominators.
LCM of 10,20,55/HCF of 21,63,56
⇒ 220/7