A) 6557
B) 7556
C) 4675
D) 7664
Correct Answer: B
Solution :
\[15=3\times 5\] \[18={{3}^{2}}\times 2\] \[21=3\times 7\] \[24={{2}^{3}}\times 3\] \[\text{LCM}=8\times 9\times 5\times 7=2520\] The largest number of four digits = 9999 Required number \[=9999-2439-4=7556\] (Because \[15-11=4\] \[18-14=4\] \[21-17=4\] \[24-20=4\text{)}\]You need to login to perform this action.
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