The HCF and LCM of two numbers m and n are respectively 6 and 210. If m + n = 60, then 1/m + 1/n is equal to Choose the most appropriate option: A) 1/35 B) 3/35 C) 1/21 D) 2/35 E) None
Answer   We have, m x n = 6 x 210 = 1260   âˆ´ 1/m + 1/n = (m + n)/mn = 60/1260 = 1/21   1/21orrect Option: 1/21
<result>C</result>
The HCF and LCM of two numbers m and n are respectively 6 and 210. If m + n = 60, then 1/m + 1/n is equal to