Math 11 Chapter 1Number SystemTest - 15

Math 11 Chapter 1
Number System
Test - 15

1. Around "5000 B.C." the Egyptians had a number system based on?

a) 5
b) 50
c) 10
d) 100

2. If n is a Prime number, then √ n is?

a) Complex number
b) Rational number
c) Irrational number
d) None of these

3. A recurring decimal represents?

a) Real number
b) Natural number
c) Rational number
d) None of these

4. Pi sign is?

a) Complex number
b) An integer
c) An irrational number
d) Natural number

5. A Prime number can be a factor of a square only if it occurs in the square at least?

a) Twice
b) Once
c) Thrice
d) None of these

6. {1,-1} possess closure property w.r.t ?

a) Addition
b) Multiplication
c) Division
d) Subtraction

7. (-1) ^21/2 is equal to?

a) I
b) -i
c) 1
d) -1

8.
√ -1 is?

a) Real number
b) Natural number
c) Rational number
d) Imaginary number

9. 0 is?

a) Positive number
b) Negative number
c) Natural number
d) Non-negative

10. The multiplicative identity in set of complex numbers is? a) (1,1)
b) (0,1)
c) (1,0)
d) (0,0)

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