Find a number such that when it is added to 7249 will be perfectly divisible by 12,14,21,33 and 54
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The least number which is divisible by the given numbers is called the Least Common Multiple.
So we shall find the LCM of 12, 14, 21, 33 & 54
The given numbers are 12, 14, 21, 33 & 54
Now
12 = 2 × 2 ×3
14 = 2 × 7
21 = 3 × 7
33 = 3 × 11
54 = 3 × 3 ×3 × 2
The Least Common Multiple is 2 × 3 × 7 × 2 × 9 ×11 = 8316
So 8316 is the least number which is divisible by 12, 14, 21, 33 & 54.
Now 8316 – 7249 = 1067
Hence 1067 must be added to 7249 to make it divisible by 12, 14, 21, 33 & 54
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