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  1. Three men step off together from the same spot. Their steps measure 63 cm, 70 cm and 77 cm respectively. The minimum distance each should cover so that all can cover the distance in complete steps is
    1. 9630 cm
    2. 9360 cm
    3. 6930 cm
    4. 6950 cm
Correct Option: C

We find LCM of 63, 70 and 77 cm.

∴ LCM = 7 × 9 × 10 × 11 = 6930
Required distance = LCM of 63, 70 and 77 cm. = 6930


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