how can you pattern the following 5 by 5 square. what's the sum of all numbers?

0 ⤊

how can you pattern the following 5 by 5 square. what's the sum of all numbers?

2-3-5-8-13
4-7-11-?-?
6-10-?-?-?
10-?-?-?-?
16-?-?-?-?

2006-10-04 13:22:21 · 1 answers · asked by beary 1 in Education & Reference ➔ Homework Help

1 answers

2, 3, 5, 8, 13
4, 7, 11, 18, 29
6, 10, 16, 26, 42
10, 17, 27, 44, 71
16, 27, 43, 70, 113

∑= 638

Pattern: every number is the sum of the previous two numbers in its row, and also the sum of the previous two numbers in its column.

2006-10-04 13:35:34 · answer #1 · answered by Pascal 7 · 0⤊ 0⤋