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How many 1’s

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How many 1’s

by sanju09 » Fri May 08, 2009 6:08 am
How many 1’s are there in the following sequence which are immediately preceded by but not immediately followed by 7?

719117189171213145713917

A. four
B. zero
C. two
D. one
E. three
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by DeepakR » Fri May 08, 2009 9:09 am
719117189171213145713917


Is the answer A.) 4 .

-Deepak
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