147 Answered Questions for the topic discrete mathematics

05/14/14

#### Each part below gives a set of facts about a predicate P(x). Select all the parts where P(x) is guaranteed to be true for all positive integers x.

Each part below gives a set of facts about a predicate P(x). Select all the parts where P(x) is guaranteed to be true for all positive integers x.   P(1) is true: for all y > 0 , if P(y) is... more

05/11/14

#### If the predicate a+b = even is true, the prove the following loop is true while (a >= 0 and a <= 100) {a = a + 3;b = b -1;

jnuwhguhfdughefghehgierhieriyjyreib ierirejyi yijyt

04/16/14

#### the question is in the description part.

Question: suppose that a password for a computer system must have at least 8, but no more than 12, characters, where each character in the password is a lowercase english letter, a digit, or one of... more

04/16/14

#### let an be the sum of the squares of first n natural numbers. that is an = +...+ n^2 for n> or equal to 1.

A). Find the values a1,a2,a3,a4,a5,a6, and a7.   B). Based on the computational results in a), deduce a formula for an

04/16/14

#### express this statement using quantifiers (every student in this class has taken some course in every department in the school of mathmatical sciences)

express this statement using quantifiers (every student in this class has taken some course in every department in the school of mathmatical sciences

03/19/14

#### Caesar cipher

. Using a Caesar cipher decrypt the following message and determine the key used. (Hint: KU is repeated , Alphabet wraps around)VJKU SWKB KU QXGT

03/17/14

#### Which relationships are true?

Which relationships are true? Hint: the List of symbols from your assigned reading will help. a) Q ⊆ Z b) Q ∪ Z = Q c) Z^+ U Q =Z

03/17/14

#### im so lost

Is 2a(5a-30) divisible by 10?

03/17/14

#### mathematical notation question

Write the following is mathematical notation (Hint: ∀ ∃ ) a) All students attend classesb) Some people are criminal

03/16/14

#### Caesar cipher

Using a Caesar cipher decrypt the following message and determine the key used. (Hint: Only O or E can be doubled together, Alphabet wraps around)LXX MABL UHHD BL WHGXHint: Find the common letters.

03/16/14

#### 8-bit representation question

Using 8-bit representation compute the following sumsa) 111 + 45b) 67 + 67

03/16/14

#### elements in a set???

How many elements are in the set { 3 ,4 ,3 ,5 ,2 ,8 ,4 ,5 ,8 ,9} ?

03/16/14

#### verify the following statements

Verify the following statements a) 100 ≡ 5 (mod 5) b) 112 ≡ 4 (mod 7) c) 80≡ 8 (mod 2)   im so lost

03/16/14

#### Is 3e(2e+3) divisible by 7????

Is 3e(2e+3) divisible by 7?   i know its simple but im horrible at math

03/14/14

#### Express the following equation, using O ? or T notation

Express the following equation, using Ω Ο or Θ notation|3x^5 -4x^4 +3x^3 +2x^2 +5x +12| ≤ 12|x^5 |

03/13/14

#### i dont understand these equations and notation

Given the following equations what is the corresponding Θ(x^? ) notation ((2x-2)(2x+4))/8 ((2x^2-2x+2)(2x+4))/2 ((3x^3+2x^2+4x+2)(2x^2+3x+2))/12

03/13/14

#### truth table help

Write the truth table for ~(a ^ b) V (a V b) ?

03/12/14

#### need help with de morgans law

Use De Morgan’s law and write the negation to:(a) My son is younger than 18 and he loves golf(b) The sun rise in the east and rises at dawn

03/11/14

#### binary notation

. Represent the following number in binary notation: a) 64b) 192c) 348d) 2121e) 741

03/01/14

#### Using arrow diagrams If 7 dice are rolled, and explain why must two at least be the same value?

Using arrow diagrams If 7 dice are rolled, and explain why must two at least be the same value?

03/01/14

#### With an IP address how many times can the bit pattern 101001 appear?

With an IP address how many times can the bit pattern 101001 appear?

03/01/14

#### how many random words?????

Using a standard cell phone keypad, how many random words (just letters strung together) can be produced from the PIN 23579?

03/01/14

#### total number of combinations..........????

Write the total number of possible combinations of 5 dice being rolled at once?

03/01/14

#### give the probability............

Write each as a set and then give the probability, of the following happening?a) From a full pack of picture cards (J,Q,K,A) an ace is dealt?b) From a set of a single die that a 4 is rolled?c) From... more

02/27/14

#### Using arrow diagrams If 7 dice are rolled, and explain why must two at least be the same value?

Using arrow diagrams If 7 dice are rolled, and explain why must two at least be the same value?

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