If the product of the integers a, b, c and d is 546 and if 1 < a < b < c < d, what is the value of b+c?
Pick
A) 273 B) 185 C) 21 D) 10 E) 4
Make prime factorization of 546: 546=2*3*7*13.   Now, since given that 1 &lt; a &lt; b &lt; c &lt; d, then a=2, b=3, c=7 and d=13 --&gt; b+c=3+7= 
<gadget id="calculator">3+7</gadget>
<output>10</output>
10.   Answer: 10.
<result>D</result>
If the product of the integers a, b, c and d is 546 and if 1 < a < b < c < d, what is the value of b+c?