Algebra Question 1d

1. Which of the following are irrational numbers?

1. Which of the following are irrational numbers?

d) -5

l)

Answer:

d) no

l) yes

1. Which of the following are irrational numbers? d) -5 l) 2 

Solution: 

d) No, 

l) Yes,    is an irrational number.

Definition:

  • Natural numbers (N)  =
  • Whole numbers(W) (0,1,2,3, . . . ) $
  • Integers (Z)  =  
  • Fraction(F) (Numbers of the form , where a and b are whole numbers and . Whole numbers are fractions with b 1.)
  • Rational numbers(Q)  =  (Numbers of the form , where a and b are integers and . All integers are rational numbers with b 1.) 
  • Irrational numbers  =  (All non-terminating, non-repeating numbers, such as , , the square roots of numbers which are not perfect squares.)