Which of the following sets is a universal set for the other four sets? (a) The set of even natural numbers

(b) The set of odd natural numbers

(c) The set of natural numbers

(d) The set of negative numbers

(e) The set of integers

The set of integers

Step-by-step explanation:

The set of integers is a set which contains negative integers, natural numbers, even and odd natural numbers.

Notice also, that natural numbers is a univesal set of the even and odd natural numbers. They both are a subsets of the natural numbers.

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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step-by-step explanation: