Logical judgment in the necessity of reasoning against the relationship mnemonic:
①The stem appears on the relationship between the opposition, the correct option "is" or "is not" and the stem "a "is or is not the same; the stem of the lower opposition, the correct option "is" or "is not" and the stem of the "some" is or is not the opposite;
② correct option if there is "all" on the selection of "all", the most representative, no "all" selection "some of the "Logical judgment against the relationship example:
Example: a law firm **** 12 staff. Some of them know how to use computers; some of them don't know how to use computers; and the director doesn't know how to use computers.
Only one of these three propositions is true.Which of the following correctly represents the number of people in the law firm who can use computers?
A. All 12 will use it
B. None of the 12 will use it
C. Only one will use it
D. Can't be sure
Let's verify that we can use this mnemonic in our questions:
By looking at the stem "some are "Some are" and "Some are not", we can conclude that the two are in an opposing relationship, and the sentence "The director does not know how to use a computer" should be written in the sentence form - "Some are not", according to formula ①, the correct choice is "Some are not". According to the formula ①, the correct option should be the one opposite to "the director won't use it", i.e., the option opposite to "some non-" in "some non-", so the correct answer is in the middle of A and C. According to the formula ②, the correct answer should be "all of them", i.e., the one opposite to "some non-" in "some non-". The answer to this question is "all yeses", so the correct answer is "A".
Remember this mnemonic, you only need three steps to solve the problem of the opposition relationship, the first step: to determine the stem of the information given on the opposition relationship (all is, all is not) or under the opposition relationship (some is, some is not); the second step: to see the stem of the information given by the "some is" or "some is not". "Step 3: Use the formula to compare the choices with the question and arrive at the correct choice.
The above is recommended by experts in public education in opposition to the relationship between the solution of the skills of the very key mnemonic, memorize the mnemonic is to kill the opposition to the topic of the topic of the practical very strong method, the need for each candidate to use this mnemonic usually more practice, only then can face this kind of topic easily, improve the speed and accuracy.
Judgment reasoning mnemonic:
To determine the conditions of the starting push, the relevant conditions for the breakthrough;
Assuming that the substitution of the most commonly used, the option of comprehensive can be excluded;
Several types of elements listed in the chart, the order of priority need to pay attention to.
Judgmental reasoning mnemonic solution question type:
A, true or false type
The stem features: the stem gives a few dialogues (guess) and its true or false situation, but does not specify which sentence is true which sentence is false, requires reasoning according to the given conditions.
Example 1 A, B, C, D, four people's cars are white, silver, blue and red. When asked about the color of their respective cars, A says, "B's car is not white." B says, "C's car is red." C says, "D's car is not blue." D says, "One of A, B, and C's car is red, and only that person is telling the truth."
If D is telling the truth, then the following statement is correct ( ).
A.A's car is white and B's car is silver
B.B's car is blue and C's car is red
C.C's car is white and D's car is blue
D.D's car is silver and A's car is red
CKG Analysis: The question asks to determine the color of the cars according to what the four people said in relation to the The question asks to determine the correspondence with the color of the car based on the words spoken by the four people. Only D's words are deterministic, and it can be seen that "the car of the one who tells the truth is red, and only one of A, B and C tells the truth".
Observing the words of A, B and C, we find that the mention of the color red in B's words is related to the condition and can be used as a breakthrough.
Obviously, B can not tell the truth, otherwise B and C's car are red, does not meet the question; by B's words are false can be known that C's car is not red, then C said is not the truth, then D's car is blue. So the one who tells the truth is A. A's car is red. If A's words "B's car is not white" are true, then B's car is silver, and C's car is white.
The answer is C.
When there is only one definite condition, you can start from the truth or falsehood of the words related to the condition.
The key to solving true-false type questions is to find a breakthrough, usually from the conditions of certainty, consistent conditions and the only conditions of these points, we need to do more questions more experience, in addition, the assumption method and the method of substitution is a common solution to true-false type of questions, if there is no idea in the examination room, you can directly make assumptions or substitutions.