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Question
I need an answer to this problem:
What is the digit in the tens place of this sum?
7+77+777+7,777+.......+7,777,777,777,777,777
Thank you!
6
7,777,777,777,777,777
777,777,777,777,777
77,777,777,777,777
7,777,777,777,777
777,777,777,777
77,777,777,777
7,777,777,777
777,777,777
77,777,777
7,777,777
777,777
77,777
7,777
777
77
7
Simple enough to add them up, the ones digit is 2 (7x16 = 112), carry the 11 and the tens digit is 7X15+11 = 116
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| Comment | Hey you did awesome. I am able to figure the problem out and you made it easy. Also I now know how to do these type of problems. Thank you! | ||
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Answers by Expert:
Lynn Houston
Expertise
I can answer questions in basic algebra and any grade school math.
Experience
Love math, currently helping my nephew get through Intermediate Algebra.
Education/Credentials
I majored in Math Ed in college (but decided not to teach), so have over 40 credits of math.
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