1. Describe set D in words: D = { 1, 3, 5, 7, 9 }. *

A. Set of odd numbers less than 9.

B. Set of prime numbers less than 11.

C. Set of odd numbers from 1 to 9.

D. Set of whole numbers less than 10.


2. Consider set A = {x / x is a consonant in the word “EXCELLENCE”}. Find n( A). *

A. n(A) = 5

B. n(A)= 6

C. n(A)= 4

D. n(A)= 7


3. Write the set of prime number less than or equal to 23 using roster method. *

A. { 2, 3, 5, 7, 9, 11, 13, 15, 17, 19 }

B. { 1, 2, 3, 5, 7, 11, 13, 17, 19, 23 }

C. { 2, 3, 5, 7, 11, 13, 17, 19, 23 }

D. { 1, 2, 3, 5, 7, 11, 13, 17, 19, 23 }


4. Consider U = { b, c, d, e, f, g, h, i }, A = { c, e, g, h }.Find A’ *

A. A’ = { b, d, f, h }

B. A’ = { b , d, ,f, i }

C. A’ = { j, k, l,.. x,y,z}

D. A’ = { }


5. Which of the following is true? *

A. 3 ∈{ 2,4,6,8 }

B. {a} ∈{a,b,c }

C. 1 ∈{x/ x is a prime no.}

D. { 0 } ∈{ x / x is a whole no.}

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