PRACTICE QUESTIONS FOR CLASS 9 MATH

Problem 1 :

Solve the given equation below x + 2 log27 9  =  0

(A)  -4/3     (B)  1/2     (C)  2/5

Solution

Problem 2 :

In the given, ∠A = 64° , ∠ABC = 58°. If BO and CO are the bisectors of ∠ABC and ∠ACB respectively of ΔABC, find x° and y°

(A)  58, 122     (B)  114, 25     (C)  110, 18

Solution

Problem 3 :

Find the number of subsets for the set A  =  {1, 2, 3, 4, 5}

(A)  11   (B)  22   (C)  32

Solution

Problem 4 :

{The number of engineering colleges in Singapore}

The above set is a --------

(A)  singleton set   (B)  infinite set   (C)  finite set 

Solution

Problem 5 :

The cardinal number of the set P {0}

(A)  3   (B)  4   (C)  1 

Solution

Problem 6 :

If A  =  {1, 2, 3} and B  =  {2, 3, 4}, find A n B.

(A)  {1, 2, 3}   (B)  {2, 3}   (C)  {1, 2, 3, 4}

Solution

Problem 7 :

The equation x + 3y  =  12, 3x + 9y  =  24 has ------ solution.

(A)  unique   (B)  infinite   (C) no 

Solution

Problem 8 :

Solve 5x + 3y  =  11, 3x + 5y  =  -3 

(A)  (1, 2)   (B)  (0, 3)   (C) (4, -3) 

Solution

Problem 9 :

Find the sum of 2x4 - 3x+ 5x + 3 and 4x + 6x- 6x- 1

(A)  2x4 + 6x3 - 9x2 + 9x + 2

(B)   4x4 + 6x3 - 9x2 - 9x 

(C)  -2x4 + 6x3 + 9x2 - 9x + 2

Solution

Problem 10 :

If a/b  =  5 then the value of (a - b)/(a + b) is

(A)  1/8   (B)  2/3   (C)  3/4 

Solution

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