1.

If `n` is the number of positive integral solution of `x_(1), x_(2)x_(3)x_(4) = 210`, then which of the following is incorrect ?A. n must be a perfect squareB. n must be a perfect `4^(th)` powerC. n must be a perfact `8^(th)` powerD. n must be divisible by an odd prime number

Answer» Correct Answer - D
If n is the number …………
`x_(1)x_(2)x_(3)x_(4) = 210 = 2xx3xx5xx7`
`implies` no.of positive integral solutions
`= 4xx4xx4xx4=4^(4)`


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