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An Ingenious Sum Puzzle (Posted on 2006-10-09) Difficulty: 2 of 5
(A)Consider the set of all possible positive binary whole numbers each having exactly twelve digits consisting of precisely six 1's and six 0's. The first digit cannot be 0 . Determine the sum of all these numbers in the decimal notation.

(B)Consider the set of all possible positive binary whole numbers each having exactly fourteen digits consisting of precisely seven 1's and seven 0's. The first digit cannot be 0. Determine the sum of all these numbers in the decimal notation.

See The Solution Submitted by K Sengupta    
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  Subject Author Date
Solutionsolution (spoiler)Charlie2006-10-09 10:44:32
Mootbrianjn2006-10-09 09:09:33
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