Real Numbers Number System

If a is a real number, x and y are integers, then aˣ . aʸ = ?

• aˣʸ

• aˣ⁻ʸ

• (a)ˣ

• aˣ⁺ʸ

Answer explanation

When we multiply same base with different exponents, we add the exponents. aᵐ . aⁿ = aᵐ⁺ⁿ

Value of ∜(121)⁻⁴ = ____

• 121

• 1/121

• 120

• 1/11

Answer explanation

∜(121)⁻⁴ = ∜(1/121)⁴ = (1/121)⁴ ˣ ¹ᐟ⁴ = 1/121

Classify 0 in the real number system.

• Natural, Whole, Integer, Rational

• Natural, Integer, Irrational

• Whole, Integer, Rational

Classify 15 in the real number system.

• Natural, Whole, Integer, Rational

• Irrational

• Natural, Whole, Rational, Irrational

Classify .25252525.

• Natural

• Irrational

• Rational

A repeating decimal is what type of number?

• Rational 

• Integer

• Natural 

-14 could NOT be which type of number?

• Integer

• Rational

• Real

• Whole

The number is a/an...

• Rational Number

• Irrational Number

• Integer

• Whole Number

Classify the number: 3

• natural, whole, integer, rational, real

• whole, integer, rational, real

• natural, whole, integer, irrational, real

• natural, whole, integer, rational

What number below is a natural, whole, integer, rational, and real number ?

• -4

• 5.1

• 0.7

• 3