2003 - JAMB Mathematics Past Questions and Answers - page 2
11
If y = 3 sin(-4x), dy/dx is
A
12x cos (4x)
B
-12x cos (-4x)
C
-12 cos (-4x)
D
12 sin (-4x)
12
Determine the maximum value of y = 3x2 - x3
A
zero
B
2
C
4
D
6
13
BY how much is the mean of 30, 56, 31, 55, 43 and 44 less than the median?
A
0.75
B
0.50
C
0.33
D
0.17
14
The range of 4, 3, 11, 9, 6, 15, 19, 23, 27, 24,21 and 16 is
A
16
B
21
C
23
D
24
16
On the pie chart, there are four sectors of which three angles are 45o, 90o and 135o. If the smallest sector represents N28.00, how much is the largest sector?
A
N96.00
B
N84.00
C
N48.00
D
N42.00
18
Find the number of committees of three that can be formed consisting of two men and one woman from four men and three women
A
3
B
6
C
18
D
24
19
A bag contains 5 blacks balls and 3 red balls. Two balls are picked at random without replacement. What is the probability that a black and red balls are picked?
A
15/28
B
13/28
C
5/14
D
3/14
20
A
19
B
20
C
21
D
22
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