2018 JAMB CBT 10th 7am MATHS QUESTIONS AND ANSWERS

MATHS
1 :- Add 1011 base 2 and 11101 base 2
CORRECT ANSWER =
(101000) base 2
2 :- Rationalize 2 – square root 3 / square root 3 + square root 2
CORRECT ANSWER =
square root 3 – 2 square 2 + square root 6 – 3
3 :- Calculate the interior angle of a regular polygon with 6 sides
CORRECT ANSWER =
120
4 :- If P = [2,4,0 1,5,-2 3,6,-3] Find |P|
CORRECT ANSWER =
-18
5 :- Express 8.3 x 10 power -5 as decimal fraction
CORRECT ANSWER =
0.000083
6 :- Represent the inequality -1 < x < or = 3 on a niumber line CORRECT ANSWER = -1 3 7 :- From the diagram above, calculate the area of the triangle CORRECT ANSWER = 4.0cm square 8 :- The coordinates of the mid point of the line joining (x base 2 y base 2) are CORRECT ANSWER = 1/2(x base 1 y base 1), 1/2 (x base 2 + y base 2) 9 :- Solve 3x p9 power 3 x = 27 CORRECT ANSWER = 3 10 :- if the factory employs 108 people. How many are mangers CORRECT ANSWER = 6 11 :- Given the equation 8y - 10x = 28 and 2y = 6x, Find the value of x and y CORRECT ANSWER = 2, 6 12 :- In how many ways on the word STATISTICS be arranged? CORRECT ANSWER = 10! / 3! 3! 2! 13 :- A teacher spent 1/5 of her salary on shoes, 1/3 of the reminder on food and kept the rest for miscellaneous expenses. What fraction was kept CORRECT ANSWER = 8/15 14 :- Find the sum of the first five terms of the sequence 3,6,9,? CORRECT ANSWER = 45 15 :- Find the distance between the points on aline P(2,6) and Q(5,9) CORRECT ANSWER = 3 square root 2 16 :- If a fair coin is tossed thrice, find the probability of obtaining at least 2 heads CORRECT ANSWER = 1/2 17 :- In the diagram above QU//RT, RS//TU, QR = 4cm, QS = 4cm, RT = 6cm. Find the ratio of the area of UTRS to the area of QUTR CORRECT ANSWER = 24:16 18 :- Defin the binary operation * by a * b = a power 2 + b power 2. Evaluate 4 * 3 CORRECT ANSWER = 25 19 :- Find 2M + 3N CORRECT ANSWER = (3,8,2 10,3,2 3,6,4) 20 :- Find the nth term n of the geometric sequence 8,4,2,?. CORRECT ANSWER = 16 (1/2) power n 21 :- Find the number of ways of selecting 5 cups out 12 cups for tea break CORRECT ANSWER = 792 22 :- From the diagram above, find the value of y degree CORRECT ANSWER = 45 degree 23 :- If p varies directly as the square of z and p = 20 when z = 5, find p when z = 8 CORRECT ANSWER = 51.2 24 :- If P {factor of 12 less than 12}. Q {even numbers greater than 2 but less than or equal to 10} CORRECT ANSWER = {4,6} 25 :- In the diagram above PQ // RS The size of the angle marked y is CORRECT ANSWER = 85 degree 26 :- Find the value of log a power 5 base a CORRECT ANSWER = 5 27 :- Given the diagram above, PQRS is a cyclic quadrilateral, Find the angle marked x CORRECT ANSWER = 82 28 :- Calculate the simple intertst on N6,500 for 4 years at 6% CORRECT ANSWER = N1560 29 :- Find it mode of the given data. 1,0,5,3,2,4,3,1,2,6,3,5 CORRECT ANSWER = 3 30 :- Evaluate S (6 cos x - 4 x power 2) CORRECT ANSWER = 6 sin x - 4/3 x power 3 + k 31 :- Given the function y = 3x square - 5x, find the dy/dx at x = -1 CORRECT ANSWER = -11 32 :- Divide 3x power 3 - 2x square - 5 + 3 by x + 2 CORRECT ANSWER = (x+1) (3x power 2 - 8x + 11) - 19 33 :- In a right angled triangle 0,0 show that sin square 30 + cos square 30 = x. Find x CORRECT ANSWER = 1 34 :- Find the limit of a givenm fractrion lim / x -> 3 x square – 4 / x + 2
CORRECT ANSWER =
1
35 :- From the table above, find the range of the distribution
CORRECT ANSWER =
5
36 :- Convert 733 base ten to a number in base five
CORRECT ANSWER =
(10413) base five
37 :- List the members of (M n H) n L
CORRECT ANSWER =
{t}
38 :- If V varies inversely as x square and V = 9 when x = 10 find V when x = 5
CORRECT ANSWER =
36
39 :- If f(x) = 3x power 3 – 2x square 5x + 3 find f(-1)
CORRECT ANSWER =
3
40 :- Find the median of the number 4,7,9,3,11 and 6
CORRECT ANSWER =
6.5

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