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A sequence with the recurrence f(n)=3*f(n-1)+f(n-2) starts with two 1-digit numbers. The sequence contains the 8-digit number ABCDAECD. A≠0, and A, B, C, D, and E are not necessarily distinct. Find all possible values of ABCDAECD.
(No Solution Yet, 2 Comments) Submitted on 2017-01-17 by Math Man   
Difficulty: 3 of 5 Bonus: Summing powers (in Just Math) Rating: 3.00
I thought of three numbers.
Their sum is 6.
The sum of their squares is 8.
The sum of their cubes is 5.
What is the sum of their fourth powers?
(Solution Posted, 18 Comments) Submitted on 2004-07-01 by Federico Kereki   
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Recently Posted Solutions:
Difficulty: 2 of 5When is it a square? (in Just Math)
Submitted By Ady TZIDON. Solution posted on 2017-01-15 22:22:22
Difficulty: 3 of 5Squares sum up to a prime (in Just Math)
Submitted By Ady TZIDON. Solution posted on 2017-01-14 20:17:29
Difficulty: 1 of 5Beginning of the Month (in Logic)
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Difficulty: 2 of 5Functional Question (in Just Math)
Submitted By Charlie. Solution posted on 2017-01-11 11:00:28
Difficulty: 3 of 5Animal/Vegetable/Mineral II (in Word Problems)
Submitted By Charlie. Solution posted on 2017-01-11 10:58:34
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