What's the next number? 1, 2, 6, 42, 1806,?

2009-03-27 3:05 pm

回答 (8)

2009-03-27 3:13 pm
✔ 最佳答案
n^2 + n
1^2 + 1 = 1 + 1 = 2
2^2 + 2 = 4 + 2 = 6
6^2 + 6 = 36 + 6 = 42
42^2 + 42 = 1764 + 42 = 1806
1806^2 + 1806 = 3261636 + 1806 = 3263442
2009-03-27 10:11 pm
Answer: 3263442

Working: Multiply the number in the series by the number which comes directly after it.

1x2 = 2

2x3 = 6

6x7 = 42

42x43 = 1806

1806x1807 = 3263442
2009-03-27 11:14 pm
The answer is 3263442
2009-03-27 10:14 pm
3263442
2009-03-27 10:14 pm
the ratios are 2,3,7,43, ...

the ration is n+1, so the next ratio is 1807
1806 x 1807 = 3263442 is the next term.

.
2009-03-27 10:13 pm
3,263,442

The sequence is multiply the answer by itself plus one
1 (1x2) 2 (2x3) 6 (6x7) 42 (42 X 43) 1086 (1086 x 1087) 3,263,442
2009-03-27 10:12 pm
3263442.
2009-03-27 10:11 pm
3263442


收錄日期: 2021-05-01 12:11:24
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090327070537AArUGtq

檢視 Wayback Machine 備份