juabc4inabi8l juabc4inabi8l

30-05-2016
Mathematics

Answered

The set of integers is not closed for

(1) division (3) addition

(2) multiplication (4) subtraction

Verified Answer :

02-06-2016

Hello,

N is closed for an opération(µ) means that
a,b ∈ N : a µ b ∈N (i suppose so)

Answer (1) ex 2/3 ∉ N

Answer (4) ex 2-3 ∉ N

∀ a,b ∈ N: a+b ∈N is true ; not a answer.

∀ a,b ∈ N: a*b ∈N is true ; not a answer.

Answer Link

Related Questions

Which founding father worked to establish a separation between church and government by drafting the Virginia Bill of Establishing Religious Freedom aPatrick He

is 22 bigger than 33

Calcium has an atomic number of 20 How many electrons does calcium lose when forming an ionic bond with another ion a 1 b 2 c 3 d 4

Most of the NorthCentral and Northeast regions of the US are in which climate zone

what numbers can be rounded to 360 when rounded to the nearest ten

What is the Maginot Line

Human females produce egg cells that have

What was the purpose of George washing tons cabinet

what divided by 9 equals 5

identify the degree of the polynomial 6xy2 xy 8 12y a 3 b 4 c 5 d 6