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> Numbers (1)> Games> Paradoxes> Riddles (1)
> Just Math (2)> Science> Algorithms
A, B and C are roots of the equation: x3 - 8x2 + 5x +12 = 0

Without solving the above equation, find the value of :
A4 + B4 + C4

(No Solution Yet, 0 Comments) Submitted on 2015-07-05 by K Sengupta   
Difficulty: 3 of 5 Bonus: 3's & 7's (in Numbers) Rating: 3.25
Find the smallest number comprised of only 3ís and 7ís which fits the following conditions:

1) It has at least one 3;
2) It has at least one 7;
3) It is divisible by 3;
4) It is divisible by 7;
5) The sum of its digits is divisible by 3;
6) The sum of its digits is divisible by 7.

(Solution Posted, 13 Comments) Submitted on 2006-04-09 by Jer   
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