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Logic Proofs Mathematics Abstract Algebra

12/08/18

How do I prove this statement using the axioms of integer arithmetic: If a < 0, b > 0, then ab < 0?

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Logic

11/24/18

Translate the following sentence into symbolic form and form a truth table for it.

The bear ate honey or fish. If the bear ate fish, then it did not eat honey. Hence, it is not the case that the bear ate honey.

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Logic Problem Solving Maths

11/11/18

problem solving and logic

Given some numbers and you can use any of these numbers twice.How many 2-digit numbers can be made with the numbers.a) 3 and 4b) 3,4 and 5c) 3,4,5 and 6

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Logic Problem Solving Ratio And Proportion

11/11/18

A landscape supplier buys 2 tonnes of fertiliser and fills an equal number of plastic bags (different sizes weighing differently) for resale. How many bags of each size will he have if:a) he fills... more

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Logic Other

09/19/18

Use the laws of propositional logic to prove p ↔ (p ∧ r) ≡ ¬p ∨ r.

Use the laws of propositional logic to prove p ↔ (p ∧ r) ≡ ¬p ∨ r

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Logic Discrete Math Discrete Mathematics Discrete Mathematics Equivalence Relation

08/12/18

Verify is tautology by using logical equivalence

Verify is tautology by using logical equivalence:((p ∨ q) ∧ (p → r) ∧ (∼ r)) → qby showing what law is using

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Logic Numbers Number Theory Arithmetic

08/08/18

Eric and Marina each wrote two or three poems everyday. Over a period of time, Eric wrote 43 poems while Marina wrote 61.

How many days were in this period of time? 18,19,20,21, or 22 days Thanks so much

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Logic Geometry Geometry Word Problems

04/11/18

If x is divisible by 12, then it is divisible by 8

The statement "If x is divisible by 12, then it is divisible by 8" is false is x equals: a) 4 b) 20 c) 36 d) 48

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Logic

03/19/18

The negation of the statement ~q∧(~p∨~r) is:

~q∧(~p∨~r) Whats ts the negation of this statement?

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Logic Math Hard To Do

02/27/18

What is a set of 7 different numbers that has a median of 93?

Math problem that requires logic and understanding of Algebra.

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Logic

01/26/18

Translating sentences into propositional logic

a) Alice is wise, if she is a doctor. b) If Alice spoke to Bob, then Eve overheard her. c) If Alice is wise, then she will be neither poor nor unhappy. d) Exactly two of Alice, Bob and Carol... more

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Logic

01/26/18

If an argument has a false conclusion it must be invalid.(t or f) ?

If an argument has a false conclusion it must be invalid.

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Logic Math Proofs Math Proofs

01/26/18

Proofs, Math logic

How can you prove that one positive integer is less than another? A<B

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Logic Math Proofs Set Theory

01/25/18

Set Theory/Math Logic

Is there any way to prove that - Every point in A intersect B is greater than or equal to 1? - The intersection of two sets has a point in commonwith another set? If there is no way to... more

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Logic Math Advanced Mathematics

01/17/18

Using induction, show that ∀n∈N \ {0,1}, 1 + 1/(2^2) + … + 1/(n^2) > 3n/(2n + 1)

∀n∈N \ {0,1}, 1 + 1/(2^2) + … + 1/(n^2) > 3n/(2n + 1) N denotes the Natural Numbers. I tried adding 1/(n+1)^2 to both sides but am stuck.

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Logic Mathematics Sets

10/31/17

Why is the empty set not a subset of the set of an empty set?

Im wondering, because several sources state that the empty set is a subset of EVERY set. Yet this instance seem to be proving that statement wrong. Update: To be more specific and clear, the... more

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Logic

10/21/17

In a set of integers between the numbers 1 and 10,000, how many of these numbers are divisible by 3, 4, 5 and 11?

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Logic

09/18/17

5 times the greateat of three consecutive even integers is equal to twice the sum of the other two integer plus 42. What are the three integers?

This problem is impossible

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Logic

08/23/17

One-tenth of the cars in a car park are yellow. Another car arrives and now one-ninth of the cars are yellow. How many cars are now in the car park?

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Logic Math Math, Logic, Help

06/28/17

Math/Logic question I can't find the correct answer anywhere

1+4=5 2+5=12 3+6=21 8+11= I have seen 3 examples of answers people say are correct Example 1 answer 96 1×4=4+1=5 2×5=10+2=12 3×6=18+3=21 8×11=88+8=96 Example 2 answer... more

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Logic

06/23/17

TwO days ago i was 10 years old &will be of 13 next year if i am speaking the truth whats todays date

Options are 28 feb 29feb 31 dec Or 1 jan

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Logic Math Probability Fake Coin

06/16/17

Trying to recall a problem about balls.

There are 30 balls of 10 colors, 3 of each color. One of each 3 balls form the same color is fake. You are allowed to pass several balls, and see whether there are fake balls among them or not.... more

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Logic

04/04/17

Let " n be a positive integer. Then show that 32n+1 + 2n-1 is multiple of 7 by using Mathematical Induction method

Soo need to know the steps in making this question work out . plz can any one help

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Logic

03/23/17

A sound argument is a valid argument with no false premises

Logic phil 60

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Logic

03/23/17

Every argument with a true premise is a sound argument

Phil 60 class

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How do I prove this statement using the axioms of integer arithmetic: If a < 0, b > 0, then ab < 0?

Translate the following sentence into symbolic form and form a truth table for it.

problem solving and logic

ratios and logic

Use the laws of propositional logic to prove p ↔ (p ∧ r) ≡ ¬p ∨ r.

Verify is tautology by using logical equivalence

Eric and Marina each wrote two or three poems everyday. Over a period of time, Eric wrote 43 poems while Marina wrote 61.

If x is divisible by 12, then it is divisible by 8

The negation of the statement ~q∧(~p∨~r) is:

What is a set of 7 different numbers that has a median of 93?

Translating sentences into propositional logic

If an argument has a false conclusion it must be invalid.(t or f) ?

Proofs, Math logic

Set Theory/Math Logic

Using induction, show that ∀n∈N \ {0,1}, 1 + 1/(2^2) + … + 1/(n^2) > 3n/(2n + 1)

Why is the empty set not a subset of the set of an empty set?

In a set of integers between the numbers 1 and 10,000, how many of these numbers are divisible by 3, 4, 5 and 11?

5 times the greateat of three consecutive even integers is equal to twice the sum of the other two integer plus 42. What are the three integers?

One-tenth of the cars in a car park are yellow. Another car arrives and now one-ninth of the cars are yellow. How many cars are now in the car park?

Math/Logic question I can't find the correct answer anywhere

TwO days ago i was 10 years old &will be of 13 next year if i am speaking the truth whats todays date

Trying to recall a problem about balls.

Let " n be a positive integer. Then show that 32n+1 + 2n-1 is multiple of 7 by using Mathematical Induction method

A sound argument is a valid argument with no false premises

Every argument with a true premise is a sound argument

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