If each term in the sum a1+a2+a3+.....+an is either 7 or 77 and the sum equals 364, which of the following could be equal to n?	Choices:	A) 38	B) 39	C) 40	D) 41	E) 42
Since, there is no 52 in the answer choices (364/7 = 52), we know there is at least one 77.   364 - 77= 
<gadget id="calculator">364 - 77</gadget>
<output>287</output>
287   287/7= 
<gadget id="calculator">287/7</gadget>
<output>41</output>
41   41+1= 
<gadget id="calculator">41+1</gadget>
<output>42</output>
42.   If 42 wasn't there, I would have subtracted 77 from 287 and continued in a similar way.   Ans. 42
<result>E</result>
If each term in the sum a1+a2+a3+.....+an is either 7 or 77 and the sum equals 364, which of the following could be equal to n?