Evaluate\({\rm{\;}}\mathop {\lim }\limits_{x \to 0} \left\{ {\frac{{{{\left( {1\; + \;x} \right)}^7} - 1}}{{{{\left( {1\; + \;x} \right)}^4} - 1}}} \right\}\)
1
7/4
2
1/4
3
1/7
4
4/7
Evaluate\({\rm{\;}}\mathop {\lim }\limits_{x \to 0} \left\{ {\frac{{{{\left( {1\; + \;x} \right)}^7} - 1}}{{{{\left( {1\; + \;x} \right)}^4} - 1}}} \right\}\)