888 Answered Questions for the topic discrete math

Discrete Math Math

07/19/22

How many 3-card hands (from a standard 52-card deck) have the property that it is not the case that all cards are black or all cards are of the same suit?
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Discrete Math Math

07/19/22

How many 5-digit numbers are there in which three of the digits are 7, or two of the digits are 2?
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Discrete Math Math

07/19/22

How many 6-digit numbers are even or are divisible by 5?
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Discrete Math Math Algebra 1 Algebra 2

07/03/22

It's urgent plz
Consider the name as MARIAHOSSAIN and Roll number as 21101164.1.Find the total number of arrangements from the letters of your name taken all at a time without changing the the positions of vowels... more
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Discrete Math Math Prealgebra Mathematica

07/02/22

Consider the name as MARIAHOSSAIN and Roll number as 21101164
1.Find the total number of arrangements from the letters of your name taken all at a time without changing the the positions of vowels and consonants.2.find the total number of three digit numbers... more
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Discrete Math Math

06/26/22

Using mathematical induction, prove that
n + 4 < n + 9 for for every positive integers
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Discrete Math

06/26/22

Discrete structures

If {{a, c, e}, {b, d, f}} is a partition of the set A = {a, b, c, d, e, f}, determine the corresponding equivalence relation R.
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Discrete Math

06/23/22

How many 5 string passwords can be formed?
The string can be made up of lowercase letters or digits. Contain at most 2 lowercase letters and no repeated digits.
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05/23/22

Find the expansion base 7 of 67 and Compute (37^15 + 27 × 43) mod 6 using modular arithmetic.
Find the expansion base 7 of 67Compute (3715 + 27 × 43) mod 6 using modular arithmetic (without the use of a calculator). Show all your work.
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05/23/22

Check whether the following integers are multiplicative inverses of 3 mod 5.

Check whether the following integers are multiplicative inverses of 3 mod 5. a) 6 b) 7
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05/23/22

We want to find 8 in the following list: 2, 6, 5, 1, 11, 18, 8, 0.
We want to find 8 in the following list: 2, 6, 5, 1, 11, 18, 8, 0.a) Can we use Binary Search Algorithm? Justify your answer. b) If a Linear Search Algorithm is used to find 8, how many comparison... more
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05/23/22

Look at the following algorithm:
Look at the following algorithm:Input: n: real numberOutput: undisclosed procedure x(n) t := 1 For i := 3 to n t := t + n End-for Return(t) What is returned by the algorithm on the input 7, i.e. n... more
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05/23/22

Determine which statements are false or true. Justify your answer.
Determine which statements are false or true. Justify your answer.(a) {0, 1} ∈ {0, {0}, {1}, 1} (b) {a, b, c} ⊂ {a, {a, b}, c, {a, c}, {{{a, b, c}}}} (c) ∅ ⊆ {a, b, c} (d) {1} ∈ {{1}, 0, {{1}}}
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05/23/22

Let f(x) = 4x - 7 and g(x) = 6 - 2x where f(x) : R → R, and g(x) : R → R. Find (f ◦ g)(x).
Let f(x) = 4x - 7 and g(x) = 6 - 2x where f(x) : R → R, and g(x) : R → R. Find (f ◦ g)(x).
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05/23/22

Determine whether the function f(x) = 8 − 2x^2 , where f(x) : R → R, is bijective and explain why.
Determine whether the function f(x) = 8 − 2x2 , where f(x) : R → R, is bijective and explain why.
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05/23/22

For the sets A = {a, b, c, d, e}, B = {a, c, e, g, n}, C = {b, c, d, e, n, w} and the universal set is U = {a, b, c, d, e, g, n, w}. Find
For the sets A = {a, b, c, d, e}, B = {a, c, e, g, n}, C = {b, c, d, e, n, w} and the universal set is U = {a, b, c, d, e, g, n, w}. Find (a) |A ∩ B ∩ C| (b) C¯(c) A¯∪(B − C)
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05/23/22

Rewrite the statement ¬∃x (∀y∃tS(x, y, t) ∧ ∃tR(x, t)) so that negations appear only within predicates.
Rewrite the statement ¬∃x (∀y∃tS(x, y, t) ∧ ∃tR(x, t)) so that negations appear only within predicates.
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Discrete Math Discrete Mathematics

05/16/22

Set of all factors of 15 in Set builder method
Set of all factors of 15 in Set builder method
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Discrete Math Discrete Mathematics

05/12/22

Write the following sets using roster method and set builder notation.
A.     Write the following sets using roster method and set builder notation.a.        Set of all factors of 15b.       Set of all solution of the equation 8x=0c.        Set of all integer’s... more
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Discrete Math Discrete Mathematics

05/12/22

Discrete Mathematics
A.   Write E if the following pairs of sets are equal and NE if not.a.   W = {a, b, a, c}         Q = {a, b, c}b.   Z = {-3, 4}             E = {4, 1}c.  K = { x|x is an integer and x<0}     U... more
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Discrete Math Discrete Mathematics

05/12/22

Discrete Mathematics
A.     Consider the following set: E = {x | x is an integer less than 12}Write S if the following sets are subset of E and write such relation using the subset notation. Write D if the following... more
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Discrete Math Discrete Mathematics

05/12/22

Discrete Mathematics
A.     Write the following sets using roster method and set builder notation.a.        Set of all factors of 15b.       Set of all solution of the equation 8x=0c.        Set of all integer’s... more
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05/04/22

Which of the following is non-Eulerian but follows a Euler path?
Image - https://imgur.com/a/JiJWEJmCHOICES:a. G1 and G2b. G4c. G3 and G1
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Discrete Math Advanced Math

04/25/22

Come up with a way to produce the set A⊂ℚ (then B=ℚ∖A) out of the sequence of (rational) numbers {a_n}.
Let {a_n} be a Cauchy sequence. The equivalence class of this sequence is a real number. Construct the Dedekind cut (A|B) which presents this real number.Specifically, you need to come up with a... more
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Discrete Math

04/21/22

Find a compound proposition involving propositional variables a , b , c , and d that is true precisely when at least two of a , b , c , and d are true.

Explain in one or two sentences how you got your compound proposition and why your answer works.
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