What is the intersection of the sets a= {2,3,4,7} and b= {2,5,7,13}

{ 2 , 7 }

Step-by-step explanation:

The intersection of a set is what the sets have in common. From the given sets , the numbers common to the two are 2 and 7 , so the intersection of the sets will be { 2 , 7 }

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation: