NECO SSCE - General Mathematics - 2008

Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number

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Given that x² + y² + k = 60 and x = \(\sqrt{10}\) when y = 4 , find the value of k.

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x2 ${}^2$ + y2 ${}^2$ + k = 60

(?10)2 ${}^2$ + (4)2 ${}^2$ + k = 60

k + 10 + 16 = 60

k =  60 - 26

k = 34

If tan α = \(\frac{1}{2}\) and tan β = \(\frac{1}{3}\) and both α and β are acute, find tan (α + β).

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Construct a quadratic equation whose roots are -\(\frac{3}{2}\) and 7

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In proving the congruence of two triangles, which of the following is not important?

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Increase 135 in the ratio 3:5

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A chord XY of a circle with centre O and radius 5.32cm has ∠XOY = 140°. What is the length of the chord to the nearest centimetre?

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The ages of 10 students in a class are; 15, 16, 15.5, 17, 14.9, 14.5, 14.1, 15.1, 14.8. find the range of their ages.

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Find y if sin y = cos 48°

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If A = \(\frac{1}{2}\)h (a + b), make ‘a’ the subject of the formula

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If N25,000.00 is kept in a bank at the rate of 2% simple interest, how much will it amount to at the end of 5 years?

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The graph of cumulative frequency distribution is known as

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Multiply (3\(\sqrt{a}\) - 4a) by (4a + 3\(\sqrt{a}\))

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Evaluate (2⁵ × 4^-2) ÷ (2^-3 × 2⁶)

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P = {x:(x - 2)(x + 3) (x - 4)(x + 5) = 0}. The elements in P are

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Find the value of log\(_{\sqrt{3}}\) 81

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Find the coefficient of xy in the expansion of (x - 4y)(3x + 2y)

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If 5x - 3 = 4x - 7, what is the value 6x?

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x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2?

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The median of a distribution can be estimated from

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Which of the following angular inequalities defines an obtuse angle?

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which of the following properties is/are common to parallelograms and rectangles?
I. all angles are right angles
II. the diagonals are equals.
III. the opposite sides are equal and parallel.

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The radii of two similar cylindrical jugs are in the ratio 3:7. Calculate the ratio of their volumes

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Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2750, find y.

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Rationalize the expression \(\frac{(7 - \sqrt{3})}{(13 - \sqrt{3})}\)

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Bello chooses a number randomly from 1 to 10. What is the probability that it is either odd or prime?

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If y + \(\frac{1}{y}\) = 9, evaluate y² + \(\frac{1}{y^2}\)

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Two ladders of length 5m and 7m lean against a pole and make angles 45° and 60° with the ground respectively. What is their distance apart on the pole correct to two decimal places?

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If the 3rd and the 5th terms of an A.P are 6 and 10 respectively, find the 1st term and the common difference respectively.

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A sector of angle 120° is cut out from a circle of radius 13.5cm. what area of the circle is remaining ? (π = \(\frac{22}{7}\))

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2 bags of sugar at N_x per bag are mixed with 3 bags of sugar at N_y per bag. What is the cost in N of the mixture per bag?

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Simplify the expression:  \(Log_{4}16\) +  \(Log_{3}27\) + \(Log_{8}4096\) 

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The chances of Usman and Dele passing a Mathematics test are 12 and 13 respectively. What is the probability that neither of them passes the test?

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The ages of Abu, Segun, Kofi and Funmi are 17 years, (2x -13) years, 14 years and 16 years respectively. What is the value of x if their mean ages is 17.5 years?

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A pair of shoes was sold for N2,250.00 at a loss of 10%. What was the cost price?

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Calculate the area of a parallelogram whose diagonals are of length 8cm and 12cm and intersect at an angle of 135°

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A man travels at a rate of 25m/sec. If he travels for 10½hrs, how many kilometres has he covered?

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The ratio of the base area of a hollow cone to that of its curved surface is 1:4. If its base radius is 7cm, calculate the slant height of the cone

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T varies inversely as the square root of F when T = 7, F = 2\(\frac{1}{4}\). Find T when F = \(\frac{27}{9}\)

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