two natural numbers whose difference is 66 and the least common multiples is 360 are:(a)120and54. (b) 90and24. (c) 180and114 (d) 130and64
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Answer:
b. ithink so...
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Let the two numbers be x and x+66.
Since, the LCM is 360, there must be 5,2 and 3 as the prime factors of the two numbers.
So, one pair is 24 & 90, because 90−24=66.
Also, 24=2×2×2×3
90=2×3×3×5
∴ LCM=2×2×2×3×3×5=360.
So, the numbers are 24 and 90.
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