# 2018 JAMB CBT 10th 7am MATHS QUESTIONS AND ANSWERS (DAY 2)

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