A) 45
B) 48
C) 60
D) 75
Correct Answer: C
Solution :
[c] Side of smallest cube = LCM (15 cm, 12 cm, 20 cm) = 60 cm Volume of such a cube\[=(60\times 60\times 60)\,c{{m}^{3}}\] Volume of 1 given block \[=(15\times 12\times 20)\,c{{m}^{3}}\] Required number of blocks\[=\left( \frac{60\times 60\times 60}{15\times 12\times 20} \right)=60\] |
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