1. Which of the following is/are irrational number(s)?

(I) (II) (III)

A. (I) only

B. (II) only

C. (III) only

D. (I) and (II)

E. (II) and (III)

2. Which of the following is a rational number?

A.

B. p

C. log 2

D.

E. 3.141 59

3. If x and y are two even natural numbers, which of the following must be divisible by 4?

(I) xy (II) x + y (III)

A. (I) only

B. (II) only

C. (III) only

D. (I) and (II)

E. (I) and (III)

4. If p is a positive integer, which of the following must be an integer?

A.

B.

C.

D.

E.

5. If a, b and c are three consecutive positive integers, which of the following must be even?

A. a + b + c

B. ab + bc + ca

C. abc

D.

E.

6. Which of the following is/are function(s) of x?

(I) (II) (III)

A. (I) only

B. (II) only

C. (III) only

D. (I) and (III)

E. (II) and (III)

7. Which of the following graphs do/does not represent function(s) of x?

(I) (II) (III)

A. (I) only

B. (II) only

C. (III) only

D. (I) and (III)

E. (II) and (III)