1.

A \[5\times 5\times 5\] cube is formed by using \[1\times 1\times 1\] cubes. If we add another layer of such \[1\times 1\times 1\] cube in the \[5\times 5\times 5\] cube. What will be the number of \[1\times 1\times 1\] cubes in the newly formed cube?

A. 216                             
B. 343
C. 294                             
D. 264
Answer» C. 294                             


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