Math 11 Chapter 2Number SystemTest - 10

Math 11 Chapter 2
Number System
Test - 10

1. Ö -1 does not belong to the set of _________________.

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2. 1 x (-1) x i x ( -i ) = _________

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

3. (-1)^21/2 = ………………….

a) -ί
b) -1
c) ί
d) +1

4. The property used in the equation 4 x (5 x 8 ) = (4 x 5) x 8 is?

a) Commutative property w,r.t. : 'x'
b) Associative property w.r.t. 'x'
c) Distributive property w,r.t. 'x'
d) Multiplicative identity

5. Z,`Z

a) |Z| ²
b) |Z| ⁴
c) |Z| ^-1
d) |Z| ³

6. (a,b) (c,d) = __________________.

a) (ac-bd, ad - bc)
b) (ac-bd, ad + bc)
c) (ac+bd, ad + bc)

7. (a,0) x (c,0)

a) (ac,1)
b) (ac,0)
c) (ac,-1)

8. The set { i,-i } possesses closure property w.r.t.______

a) None of the above.
b) Subtraction.
c) addition.
d) multiplication.

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