College Math Exam Prep

College Math Practice Test 10

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**MCQ**: Two matrices A and B are multiplied to get AB if

A) both are rectangular

B) both have same order

C) no of columns of A is equal to columns of B

D) no of rows of A is equal to no of columns of B

c

**MCQ**: Sin(A+45°)sin(A-45°) =

A) −1/2cos(2A)

B) −1/2sin(2A)

C) 1/2cos(2A)

D) None of Above

a

**MCQ**: The identity (x+3)(x+4) = x² + 7x + 12 is true for

A) two values of x

B) one value of x

C) all value of x

D) None of Above

c

**MCQ**: If a < 0, then the function ƒ(x) = a x² + bx + c has

A) maximum value

B) minimum value

C) constant value

D) positive value

a

**MCQ**: {X | x ε N Ʌ x < 1} is the

A) singleton set

B) The set with two points

C) a set with three points

D) Empty set

b

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