The ratio of the coefficient of terms \[{{x}^{n-r}}{{a}^{r}}\]and \[{{x}^{r}}{{a}^{n-r}}\] in the binomial expansion of \[{{(x+a)}^{n}}\]will be

The ratio of the coefficient of terms \[{{x}^{n-r}}{{a}^{r}}\]and \[{{

1.	The ratio of the coefficient of terms \[{{x}^{n-r}}{{a}^{r}}\]and \[{{x}^{r}}{{a}^{n-r}}\] in the binomial expansion of \[{{(x+a)}^{n}}\]will be
A.	\[x:a\]
B.	\[n:r\]
C.	\[x:n\]
D.	None of these
Answer» E.

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The ratio of the coefficient of terms \[{{x}^{n-r}}{{a}^{r}}\]and \[{{x}^{r}}{{a}^{n-r}}\] in the binomial expansion of \[{{(x+a)}^{n}}\]will be

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