Q172
Three numbers are in the proportion of 3 : 8 : 15 and their LCM is 8280. What is their HCF?
A.
60
B.
69
AnswerC.
76
D.
57
Answer: Option B
Solution
Answer: Option B
Solution:
Three numbers are 3n, 8n, 15nIts LCM = 360n
360n → 8280
n →
n = 23
Only option B is the product of 23
∴ 69 is the answer