Q.4
Determine the greatest 3 digit number exactly divisible by 8, 10 and 12?
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Answer:
L.C.M of 8, 10, 12 = 2 x 2 x 2 x 3 x 5
LCM of 8, 10, 12 = 120
We have to find the greatest 3 digit multiple of 120
the number is
120 x 8 = 960
120 x 10 = 1200
120 x 12 = 1440
The 1200 and 1440 are not 3-digit numbers.
Hence, the greatest 3- digit number exactly divisible by 8, 10 & 12 is 960.
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