Your help in this one is much appreciated..
If each term in the sum a1+a2+a3+.....+an is either 7 or 77 and the sum equals 350, which of the following could be equal to n?
A. 38
B.39
C.40
D.41
E.42
If each term in the sum a1+a2+a3+.....+an is either 7 or 77
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- ajith
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Already discussed please searchimane81 wrote:Your help in this one is much appreciated..
If each term in the sum a1+a2+a3+.....+an is either 7 or 77 and the sum equals 350, which of the following could be equal to n?
A. 38
B.39
C.40
D.41
E.42
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- harsh.champ
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In short I would say after adding each term the no. in the units place will go in a series like 7,4,1,8... which becomes 0 for the 10th term.Hence,the answer has to be a multiple of 10. So,C.imane81 wrote:Your help in this one is much appreciated..
If each term in the sum a1+a2+a3+.....+an is either 7 or 77 and the sum equals 350, which of the following could be equal to n?
A. 38
B.39
C.40
D.41
E.42
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- shashank.ism
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check the appropriate solution in this thread..
https://www.beatthegmat.com/if-each-term ... 13856.html
https://www.beatthegmat.com/if-each-term ... 13856.html
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