[計量] PP數學問題
1. if n= X * 10^2+Y * 10+Z where X Y Z are positive nonzero digits,
which of the following must be true?
(3) The difference beteween the greatest possible value of n and the least
possible value of n is 864.
答案有給(3)
為什麼? 若最大值為 9* 107* 18 - 最小值 1* 103* 12答案就大於864也
還是說最大最小值我想的就是錯的?
2. Because the decimal point was misplaced in the amount of a customer's bill
the customer was overcharged. which of the following could NOT have been the
amount of the overcharge?
(a)$0.70 (b)$0.90 (c)$1.80 (d)$9.90 (e)$90.00
麻煩會的人解答一下
感激不盡!!!!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 180.177.37.6
→
05/26 22:20, , 1F
05/26 22:20, 1F
→
05/26 22:29, , 2F
05/26 22:29, 2F
→
05/26 22:31, , 3F
05/26 22:31, 3F
推
05/26 22:33, , 4F
05/26 22:33, 4F
→
05/26 22:33, , 5F
05/26 22:33, 5F
→
05/26 22:35, , 6F
05/26 22:35, 6F
→
05/26 22:37, , 7F
05/26 22:37, 7F
→
05/26 23:01, , 8F
05/26 23:01, 8F
推
06/02 16:22, , 9F
06/02 16:22, 9F
推
06/02 16:24, , 10F
06/02 16:24, 10F
→
12/02 18:50,
5年前
, 11F
12/02 18:50, 11F