Saturday, March 14, 2009

5-star challenge #2

Grades 11 & 12 5-Star Challenge #2
Find (a) the number of digits and (b) the last three (least significant) digits in the decimal expression of 812009.

Grades 9 & 10 5-Star Challenge #2
Every possible pair within a set of five numbers is summed. The sums are 0, 3, 11, 12, 20, 21, 23, 29, 32, 41. Find the five numbers.

1 comment:

  1. hmmmm I got part b, but part a is vexing me terribly...

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