Find the greatest number of four digits which is exactly divisible by each of 12, 18, 40 and 45.
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if we multiply all the number answer will be 38880.
and if we take l.c.m. of all the number it will give 360 .
now, decide 38880 by 360
38880÷360
= 1080
but it is not largest four digit number.
so,
multiply by 9
ans = 1080 × 9
= 9720
and if we take l.c.m. of all the number it will give 360 .
now, decide 38880 by 360
38880÷360
= 1080
but it is not largest four digit number.
so,
multiply by 9
ans = 1080 × 9
= 9720
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