the two number are co-prime and their LCM is 4940 if one of number is 65 find other number
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Step-by-step explanation:
First , we find the least number which is exactly divisible by the numbers 18,21,28 and 30 . For this , we find the L.C.M of 18,21,28 and 30.
∴ L.C.M =2×2×3×3×5×7=1260
According to given , the required will be 20 more than 1260.
The required number =1260+20=1280
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