JAMB - Mathematics (2008)

  • 1
    Add 1101\(_2\),10111\(_2\) and 111\(_2\)
    Хариулт
    (C)
    1010112
  • 2
    If 125\(_x\) = 20\(_{10}\) find x
    Хариулт
    (B)
    3
  • 3
    Evaluate \(\frac{\left(\frac{3}{8}\div\frac{1}{2}+\frac{1}{2}\right)}{\left(\frac{1}{8}\times\frac{2}{3}+\frac{1}{3}\right)}\)
    Хариулт
    (D)
    3
  • 4
    Express 123456 to 3 significant figures
    Хариулт
    (A)
    123000
  • 5
    calculate the simple interest on N7,500 for 8 years at 5% per annum.
    Хариулт
    (A)
    N3,000
  • 6
    The cost of kerosene per liter increased from N60 to N85. What is the percentage rate of increase?
    Хариулт
    (A)
    42%
  • 7
    simplify \(16^{\frac{-1}{2}}\times 4^{\frac{-1}{2}} \times 27^{\frac{1}{3}}\)
    Хариулт
    (A)
    3/8
  • 8
    If log\(_{x^{\frac{1}{2}}}\)64  = 3, find the value of x
    Хариулт
    (B)
    16
  • 9
    If \(\frac{1+\sqrt{2}}{1-\sqrt{2}}\) is expressed in the form of x+y√2 find the values of x and y
    Хариулт
    (A)
    (-3, -2)
  • 10
    If X = {n\(^2\) + 1:n = 0,2,3} and Y = {n+1:n=2,3,5}, find X∩Y.
    Хариулт
    (C)
  • 11
    A book seller sells Mathematics and English books. If 30 customers buy Mathematics books, 20 customers buy English books and 10 customers buy the two books. How many customers has he altogether?
    Хариулт
    (B)
    40
  • 12
    Make Q the subject of formula when \(L=\frac{4}{3}M\sqrt{PQ}\)
    Хариулт
    (A)
    \(\frac{9L^2}{16M^2P}\)
  • 13
    If 2x\(^2\) - kx - 12 is divisible by x-4, Find the value of k.
    Хариулт
    (B)
    5
  • 14
    Factorize completely; (4x+3y)\(^2\) - (3x-2y)\(^2\) 
    Хариулт
    (A)
    (x+5y)(7x+y)
  • 15
    If x - 3 is directly proportional to the square of y and x = 5 when y =2, find x when y = 6.
    Хариулт
    (B)
    21
  • 16
    If p varies inversely as the square of q and = 8 when = 4, find when = 8
    Хариулт
    (D)
    \(\pm\)2
  • 17
    Find the range of values of x which satisfy the inequalities 4x - 7 \(\leq\) 3x and 3x - 4 \(\leq\) 4x
    Хариулт
    (A)
    -4 \(\leq\) x \(\leq\) 7
  • 18
    Solve the quadratic inequalities x\(^2\) - 5x + 6 ≥ 0
    Хариулт
    (A)
    x ≤ 2, x ≥ 3
  • 19
    The fifth term of an A.P is 24 and the eleventh term is 96. Find the first term.
    Хариулт
    (D)
    -24
  • 20
    A binary operation * is defined on the set of positive integers is such x*y = 2x-3y+2 for all positive integers x and y. The binary operation is?
    Хариулт
    (B)
    neither commutative nor closed on the set of positive integers
  • 21
    A binary operation on the real set of numbers excluding -1 is such that for all m, n ∈ R, mΔn = m+n+mn. Find the identity element of the operation.
    Хариулт
    (B)
    zero
  • 22

    In the diagram above, PQ//RS. The size of the angle marked x is?

    Хариулт
    (B)
    80o
  • 23
    Find the exterior angle of a 12 sided regular polygon
    Хариулт
    (D)
    30o
  • 24

    In the diagram above ∠OPQ is?

    Хариулт
    (B)
    53o
  • 25

    Find the area of the figure above
    [π = 22/7]

    Хариулт
    (D)
    84.8 cm2
  • 26
    Find the angle subtended at the center of a circle by a chord which is equal in length to the radius of the circle.
    Хариулт
    (C)
    60o
  • 27
    Find the capacity in liters of a cylindrical well of radius 1 meter and depth 14 meters
    [π = 22/7]
    Хариулт
    (A)
    44,000 liters
  • 28
    The locus of a point equidistant from two points p(6,2) and R(4,2) is a perpendicular bisector of PR passing through?
    Хариулт
    (B)
    (5,2)
  • 29
    Find the gradient of a line which is perpendicular to the line with the equation 3x + 2y + 1 = 0
    Хариулт
    (B)
    2/3
  • 30
    If sinθ = 3/5. Find Tanθ
    Хариулт
    (A)
    3/4
  • 31
    Find the derivative of \(y=\frac{x^7 - x^5}{x^4}\)
    Хариулт
    (C)
    3x2-1
  • 32
    Differentiate sin x - x cos x
    Хариулт
    (B)
    x sin x
  • 33
    Find the minimum value of the function y = x(1+x)
    Хариулт
    (A)
    -1/4
  • 34
    Evaluate \(\int_1 ^2(6x^2-2x)dx\)
    Хариулт
    (D)
    11
  • 35
    Evaluate \(\int^{\frac{\pi}{2}} _{\frac{-\pi}{2}} cos x dx\)
    Хариулт
    (C)
    2
  • 36
    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.
    Хариулт
    (C)
    45o
  • 37

    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?

    Хариулт
    (A)
    1/6
  • 38
    What is the mean of the data t, 2t-1, t-2, 2t -1, 4t and 2t+2?
    Хариулт
    (D)
    2t-1/3
  • 39
    Find the median of 4, 1, 4, 1, 0, 4, 4, 2 and 0
    Хариулт
    (C)
    2
  • 40
    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
    Хариулт
    (A)
    3x+3
  • 41
    Find the mean deviation of 2, 4, 5, and 9
    Хариулт
    (B)
    2
  • 42
    In how many ways can the letters of the word ACCEPTANCE be arranged?
    Хариулт
    (A)
    10! / (2!2!3!)
  • 43
    Find the number of ways of selecting 6 out of 10 subjects for an examination
    Хариулт
    (D)
    210
  • 44
    The probability of picking a letter T from the word OBSTRUCTION is?
    Хариулт
    (B)
    2/11
  • 45

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

    Хариулт
    (B)
    1/5