The sum of digits of the smallest number, which when multiplied by 800, gives a perfect cube is |
A) 2
B) 1
C) 3
D) 4
Correct Answer: B
Solution :
\[800=2\times 2\times 2\times 2\times 2\times 5\times 5={{2}^{5}}\times {{5}^{2}}\] |
To make a perfect cube we need \[2\times 5\] to be multiplied by 800. Sum of digits of |
\[(2\times 5=10)=1+0=1\] |
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