JAMB - Mathematics (2008)

  • 1
    Add 1101\(_2\),10111\(_2\) and 111\(_2\)
    پاسخ دهید
    (C)
    1010112
  • 2
    If 125\(_x\) = 20\(_{10}\) find x
    پاسخ دهید
    (B)
    3
  • 3
    Evaluate \(\frac{\left(\frac{3}{8}\div\frac{1}{2}+\frac{1}{2}\right)}{\left(\frac{1}{8}\times\frac{2}{3}+\frac{1}{3}\right)}\)
    پاسخ دهید
    (D)
    3
  • 4
    Express 123456 to 3 significant figures
    پاسخ دهید
    (A)
    123000
  • 5
    calculate the simple interest on N7,500 for 8 years at 5% per annum.
    پاسخ دهید
    (A)
    N3,000
  • 6
    The cost of kerosene per liter increased from N60 to N85. What is the percentage rate of increase?
    پاسخ دهید
    (A)
    42%
  • 7
    simplify \(16^{\frac{-1}{2}}\times 4^{\frac{-1}{2}} \times 27^{\frac{1}{3}}\)
    پاسخ دهید
    (A)
    3/8
  • 8
    If log\(_{x^{\frac{1}{2}}}\)64  = 3, find the value of x
    پاسخ دهید
    (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
    پاسخ دهید
    (A)
    (-3, -2)
  • 10
    If X = {n\(^2\) + 1:n = 0,2,3} and Y = {n+1:n=2,3,5}, find X∩Y.
    پاسخ دهید
    (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?
    پاسخ دهید
    (B)
    40
  • 12
    Make Q the subject of formula when \(L=\frac{4}{3}M\sqrt{PQ}\)
    پاسخ دهید
    (A)
    \(\frac{9L^2}{16M^2P}\)
  • 13
    If 2x\(^2\) - kx - 12 is divisible by x-4, Find the value of k.
    پاسخ دهید
    (B)
    5
  • 14
    Factorize completely; (4x+3y)\(^2\) - (3x-2y)\(^2\) 
    پاسخ دهید
    (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.
    پاسخ دهید
    (B)
    21
  • 16
    If p varies inversely as the square of q and = 8 when = 4, find when = 8
    پاسخ دهید
    (D)
    \(\pm\)2
  • 17
    Find the range of values of x which satisfy the inequalities 4x - 7 \(\leq\) 3x and 3x - 4 \(\leq\) 4x
    پاسخ دهید
    (A)
    -4 \(\leq\) x \(\leq\) 7
  • 18
    Solve the quadratic inequalities x\(^2\) - 5x + 6 ≥ 0
    پاسخ دهید
    (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.
    پاسخ دهید
    (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?
    پاسخ دهید
    (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.
    پاسخ دهید
    (B)
    zero
  • 22

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

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

    In the diagram above ∠OPQ is?

    پاسخ دهید
    (B)
    53o
  • 25

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

    پاسخ دهید
    (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.
    پاسخ دهید
    (C)
    60o
  • 27
    Find the capacity in liters of a cylindrical well of radius 1 meter and depth 14 meters
    [π = 22/7]
    پاسخ دهید
    (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?
    پاسخ دهید
    (B)
    (5,2)
  • 29
    Find the gradient of a line which is perpendicular to the line with the equation 3x + 2y + 1 = 0
    پاسخ دهید
    (B)
    2/3
  • 30
    If sinθ = 3/5. Find Tanθ
    پاسخ دهید
    (A)
    3/4
  • 31
    Find the derivative of \(y=\frac{x^7 - x^5}{x^4}\)
    پاسخ دهید
    (C)
    3x2-1
  • 32
    Differentiate sin x - x cos x
    پاسخ دهید
    (B)
    x sin x
  • 33
    Find the minimum value of the function y = x(1+x)
    پاسخ دهید
    (A)
    -1/4
  • 34
    Evaluate \(\int_1 ^2(6x^2-2x)dx\)
    پاسخ دهید
    (D)
    11
  • 35
    Evaluate \(\int^{\frac{\pi}{2}} _{\frac{-\pi}{2}} cos x dx\)
    پاسخ دهید
    (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.
    پاسخ دهید
    (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?

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

    پاسخ دهید
    (B)
    1/5