<p>If the length of lM is 7 and the length of MN is 8 which of the following could be the length of LN?
a.)23
B.)22
c.)17
d.)16
E.)14</p>
<p>The answer is 14. In a triangle, the sum of any two sides must be greater than the third side.</p>
<p>Try making a straight line with LM and MN. No matter how much you try to stretch, the maximum length of LN is 15, so you can eliminate A,B,C and D.</p>
<p>This is a universal rule, so remember this - The Sum of 2 sides in a triangle can NEVER be lesser than the 3rd side.</p>
<p>Among the choices given, only E fulfills this condition. Hence, 14 is the right answer.</p>