Find the smallest number which when increased by 11is exactly divisible by 15,20,54
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just find lcm of the number
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lcm of 15 , 20 and 54
15=3*5
20=2*2*5
54=2*3*3*3
lcm= 3*3*3*2*2*5= 540
15=3*5
20=2*2*5
54=2*3*3*3
lcm= 3*3*3*2*2*5= 540
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