A) 2520
B) 2519
C) 2521
D) None of these
Correct Answer: C
Solution :
Sol. [c] We have, \[18=2\times {{3}^{2}},\,24={{2}^{3}}\times 3\] |
\[30=2\times 3\times 5,\,\,42=2\times 3\times 7\] |
\[LCM={{2}^{3}}\times {{3}^{2}}\times 5\times 7=2520\] |
So, required least number is \[2520+1=2521\] |
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