railway RRB ALP (CBT 1 + CBT 2 + CBAT) Mock Test Series 2025 (New) Quantitative Aptitude Number System LCM and HCF

The ratio of two numbers is 3 : 7 and their LCM is 630. Then, sum of the LCM and HCF of these numbers is:

1
600
2
660
3
30
4
300
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