[問題] 一題數學（英文看不懂）
The first term of a certain sequence is 5. If every term after the first
term is 3 less than 2 times the term immediately preceding it, what is the
positive difference between the third and fourth terms?
1) 8
2) 11
3) 16
4) 19
5) 22
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推
04/30 20:59, , 1F
04/30 20:59, 1F
推
04/30 21:07, , 2F
04/30 21:07, 2F
→
04/30 21:08, , 3F
04/30 21:08, 3F
→
04/30 21:08, , 4F
04/30 21:08, 4F
→
04/30 21:09, , 5F
04/30 21:09, 5F
推
04/30 23:13, , 6F
04/30 23:13, 6F