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Sadeem Posted 19 years ago
Jokes, Puzzles & Riddles
valid or invalid
0 Argument One 00 : 02 br
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00 1. 00 All 00 00 secretaries type 00 00 fast 00 . 02 br
02 br
00 2. 00 Nisreena types 00 00 fast 00 . 02 br
02 br
00 3. 00 So Nisreena 00 00 must be a 00 00 secretary 00 . 02 br
02 br
00 Argument Two 00 : 02 br
02 br
00 1. 00 If Hawazen had 00 00 not studied, she 00 00 would not have 00 00 passed the exam 00 . 02 br
02 br
00 2. 00 Hawazen passed 00 00 the exam 00 . 02 br
02 br
00 3. 00 So Hawazen 00 00 must have 00 00 studied 00 . 02 br
02 br
00 Argument Three 00 : 02 br
02 br
00 1. 00 All of the 00 00 students who 00 00 failed the exam 00 00 had not studied 00 . 02 br
02 br
00 2. 00 Zeid passed 00 00 the exam 00 . 02 br
02 br
00 3. 00 So Zeid must 00 00 have studied 00 . 02 br
02 br
00 Argument Four 00 : 02 br
02 br
00 1. 00 All of the 00 00 people who were 00 00 on the yellow bus 00 00 were singing 00 . 02 br
02 br
00 2. 00 Lujain was not 00 00 singing 00 . 02 br
02 br
00 3. 00 So Lujain was 00 00 not on the yellow 00 00 bus 00 . 02 br
02 br
02 br
02 br
02 br
02 br
00 The question is :are the sentences valid or invail ?if any is invalid correct it ? 0-
02 br
00 1. 00 All 00 00 secretaries type 00 00 fast 00 . 02 br
02 br
00 2. 00 Nisreena types 00 00 fast 00 . 02 br
02 br
00 3. 00 So Nisreena 00 00 must be a 00 00 secretary 00 . 02 br
02 br
00 Argument Two 00 : 02 br
02 br
00 1. 00 If Hawazen had 00 00 not studied, she 00 00 would not have 00 00 passed the exam 00 . 02 br
02 br
00 2. 00 Hawazen passed 00 00 the exam 00 . 02 br
02 br
00 3. 00 So Hawazen 00 00 must have 00 00 studied 00 . 02 br
02 br
00 Argument Three 00 : 02 br
02 br
00 1. 00 All of the 00 00 students who 00 00 failed the exam 00 00 had not studied 00 . 02 br
02 br
00 2. 00 Zeid passed 00 00 the exam 00 . 02 br
02 br
00 3. 00 So Zeid must 00 00 have studied 00 . 02 br
02 br
00 Argument Four 00 : 02 br
02 br
00 1. 00 All of the 00 00 people who were 00 00 on the yellow bus 00 00 were singing 00 . 02 br
02 br
00 2. 00 Lujain was not 00 00 singing 00 . 02 br
02 br
00 3. 00 So Lujain was 00 00 not on the yellow 00 00 bus 00 . 02 br
02 br
02 br
02 br
02 br
02 br
00 The question is :are the sentences valid or invail ?if any is invalid correct it ? 0-
Top answer
0 This is a grammar forum, not a logic forum, Sadeem. 0-
- 0 This is a grammar forum, not a logic forum, Sadeem.
- 0-
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4 Answers
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0 This is a grammar forum, not a logic forum, Sadeem. I am moving your post to Puzzles and Riddles (for want of a better idea). 0-
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0 These are logic puzzles Sadeem. You need to work out whether sentence 3 is logically correct or not - 'valid'. (it's not a case of correcting their grammar or anything). 02 br
02 br
00 for example in puzzle 1, 02 br
02 br
00 1. All secretaries type fast. 02 br
02 br
00 2. Nisreena types fast. 02 br
02 br
00 3. So Nisreena must be
02 br
00 for example in puzzle 1, 02 br
02 br
00 1. All secretaries type fast. 02 br
02 br
00 2. Nisreena types fast. 02 br
02 br
00 3. So Nisreena must be
00
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Argument Four is valid.
Argument Three is invalid because not all of the students who had not studied failed the exam.
Not sure about Argument Three, though.
Argument Three is invalid because not all of the students who had not studied failed the exam.
Not sure about Argument Three, though.
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