[問題] 請問兩題數學的答案
1.S is the sum of three consecutive integers,the greatest of which is x.
In term if S,which if the following is the sum of three consecutive integers
,the least of which is x?
(A) S-6
(B) S-3
(C) S+3
(D) S+6
(E) 2S
Ans:D
2.Of the positive integers that are multiples of 30 and are less than or
equal to 360,what fraction are multiples of 12?
(A) 1/6
(B) 1/5
(C) 1/3
(D) 2/5
(E) 1/2
Ans:E
小弟想破頭就是想不出來...
想請板上的大大們幫我解答!
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※ 編輯: a0939327899 來自: 220.136.212.102 (06/30 23:54)
推
06/30 23:54, , 1F
06/30 23:54, 1F
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06/30 23:54, , 2F
06/30 23:54, 2F
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06/30 23:55, , 3F
06/30 23:55, 3F
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06/30 23:55, , 4F
06/30 23:55, 4F
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06/30 23:56, , 5F
06/30 23:56, 5F
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06/30 23:57, , 6F
06/30 23:57, 6F
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06/30 23:57, , 7F
06/30 23:57, 7F
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06/30 23:58, , 8F
06/30 23:58, 8F
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06/30 23:59, , 9F
06/30 23:59, 9F
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06/30 23:59, , 10F
06/30 23:59, 10F
推
06/30 23:59, , 11F
06/30 23:59, 11F
→
07/01 00:00, , 12F
07/01 00:00, 12F
→
07/01 00:00, , 13F
07/01 00:00, 13F
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07/01 00:01, , 14F
07/01 00:01, 14F
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07/01 00:01, , 15F
07/01 00:01, 15F
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07/01 00:03, , 16F
07/01 00:03, 16F
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07/01 00:04, , 17F
07/01 00:04, 17F
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07/01 00:13, , 18F
07/01 00:13, 18F
推
07/01 07:31, , 19F
07/01 07:31, 19F
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