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4,407 questions JAMB 2359 WAEC 1853 NECO 179 POST_UTME 6 CUSTOM 10

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4,407 questions

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Question 921

jamb 2008

\(\begin{pmatrix} -2 & 1 \\ 2 & 3 \end{pmatrix}\) \(\begin{pmatrix}p & q \\ r & s\end{pmatrix}\) = \(\begin{pmatrix} 1 & 0 \\0 & 1 \end{pmatrix}\). What is the value of r?

A-\(\frac{1}{8}\)

B\(\frac{3}{8}\)

C\(\frac{5}{8}\)

D\(\frac{1}{4}\)

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Question 922

jamb 2008

Find the values of x and y respectively if
\(\begin{pmatrix} 1 & 0 \\ -1 & -1\\ 2 & 2 \end{pmatrix}\) + \(\begin{pmatrix} x & 1 \\ -1 & 0\\ y & -2 \end{pmatrix}\) = \(\begin{pmatrix} -2 & 1 \\ -2 & -1\\ -3 & 0 \end{pmatrix}\)

A-3, -2

B-5, -3

C-2, -5

D-3, -5

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Question 923

jamb 2008

The result of rolling a fair die 150 times is as summarized in the table above. What is the probability of obtaining a 5?

A³/₁₀

B¹/₅

C¹/₆

D¹/₁₀

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Question 924

jamb 2008

The probability of picking a letter T from the word OBSTRUCTION is?

A¹/₁₁

B²/₁₁

C³/₁₁

D⁴/₁₁

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Question 925

jamb 2008

Find the number of ways of selecting 6 out of 10 subjects for an examination

A128

B216

C215

D210

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Question 926

jamb 2008

In how many ways can the letters of the word ACCEPTANCE be arranged?

A\(\frac{10!}{(2!2!3!)}\)

B\(\frac{10!}{( 2!3!)}\)

C\(\frac{10!}{(2!2!)}\)

D10!

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Question 927

jamb 2008

Find the mean deviation of 2, 4, 5, and 9

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Question 928

jamb 2008

If x > 0, find the range of number x-3, 3x+2,x-1, 4x, 2x-1, x-2, 2x-2, 3x and 3x+1

A3x+3

B3x+1

C2x+5

D2x+1

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Question 929

jamb 2008

Find the median of 4, 1, 4, 1, 0, 4, 4, 2 and 0

Azero

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Question 930

jamb 2008

What is the mean of the data t, 2t-1, t-2, 2t -1, 4t and 2t+2?

A2t

B2t-1

C²/₃t+1

D2t-¹/₃

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Question 931

jamb 2008

The bar chart above shows the number of times the word "a, and , in, it, the ,to" appear in a paragraph in a book.

What is the ratio of the least frequent word to the most frequent word?

A¹/₆

B¹/₃

C²/₃

D³/₄

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Question 932

jamb 2008

On a pie chart there are six sectors of which four angles are 30°, 45°, 60°, 90° and the remaining two angles are in the ratio 2:1. Find the smallest angles of the remaining two angles.

A15^o

B30^o

C45^o

D60^o

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Question 933

jamb 2008

Evaluate \(\int^{\frac{\pi}{2}} _{\frac{-\pi}{2}} cos x dx\)

Azero

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Question 934

jamb 2008

Evaluate \(\int_1 ^2(6x^2-2x)dx\)

A16

B13

C12

D11

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Question 935

jamb 2008

Find the minimum value of the function y = x(1+x)

A-¹/₄

B-¹/₂

C¹/₄

D¹/₂

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Question 936

jamb 2008

Differentiate sin x - x cos x

Ax cos x

Bx sin x

C-x cos x

D-x sin x

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Question 937

jamb 2008

Find the derivative of \(y=\frac{x^7 - x^5}{x^4}\)

Ax(x²-1)

B3x(x²-1)

C3x²-1

D7x⁶-5x⁴

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Question 938

jamb 2008

If sinθ = 3/5. Find Tanθ

A³/₄

B³/₅

C²/₅

D¹/₄

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Question 939

jamb 2008

Find the gradient of a line which is perpendicular to the line with the equation 3x + 2y + 1 = 0

A³/₂

B²/₃

C-²/₃

D-³/₂

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Question 940

jamb 2008

The locus of a point equidistant from two points p(6,2) and R(4,2) is a perpendicular bisector of PR passing through?

A(2,5)

B(5,2)

C(1,0)

D(0,1)

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