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  1. Two numbers are in the ratio 3 : 4 and their LCM is 180. The first number is
    1. 15
    2. 60
    3. 36
    4. 45
Correct Option: D

If the numbers be 3x and 4x,
then their LCM = 12x

∴  12x = 180 ⇒ x =
180
 = 15
12

∴  First number = 3x = 45


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