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单选题 What means the logic of statements? ( )
学科：离散数学
时间：2023-11-28 03:27:40
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题目1单选题
How we can call this function <img src="https://tihai-oss-cloud.itihey.com/img/31ecf501e81b3f5a468b031889c0ffb2.jpg">?( )A. EnumeratorB. agrigatorC. combinator
题目2单选题
Algebra A = < R; +, - > is called( )A. A field of rational numbersB. A field of natural numbersC. A field of real numbers
题目3单选题
What does Principle of Inclusion means?( )A. elements with an even number of properties not have a signB. elements with an even number of properties have a sign (-)C. elements with an even number of properties have a sign (+)
题目4单选题
What means the logic of statements? ( )A. some algebraic operation with statementsB. analyze the content side of the statementC. determine whether a certain statement is true or false at the moment
题目5单选题
Permutations with unlimited repetition is?( )A. Permutations from elements of a given classB. Permutations from elements of a given specificationC. Permutations from elements of a given type
题目6单选题
A combinatorics is( )A. the field of matheatics, that studies how many different multiplications , subject to certainconditions, can be made up of given objectsB. the field of matheatics, that studies how many different combinations, subject to certain conditions,can be made up of given objectsC. the field of matheatics, that studies how many different additions, subject to certain conditions, can be made up of given objects
题目7单选题
Are the following sentences propositions? ___________.a) 2 + 3 = 5 b) x + 2 = 11 c) 3 +2 = 8 if 5-2 = 7A. Yes, No, YesB. No, Yes, YesC. No, No, NoD. Yes, Yes, Yes
题目8单选题
Let A= {0, 2, 4, 6, 8, 9,10}, B= {0, 1, 2, 3, 4, 5, 6}, and C= {4, 5, 6, 7, 9, 10} , Find A<img src="https://tihai-oss-cloud.itihey.com/img/ae475f0158bd43dff71697258343fd76.png">B<img src="https://tihai-oss-cloud.itihey.com/img/ae475f0158bd43dff71697258343fd76.png">C ________A. {0, 2}B. {4, 6}C. {2, 4}D. {6, 8}
题目9单选题
Let P(x) be the statement "the word x contains the letter e." What are these truth values? __________. a) P(orange). b) P(Lemon)A. F,TB. F, FC. T, FD. T, T
题目10单选题
What is the cardinality of the vowel set {Ø,a, {a}, {a,{a}}}__________A. 1B. 3C. 4D. 2
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