2008 - JAMB Mathematics Past Questions and Answers - page 2
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.
A
30
B
40
C
50
D
60
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12
Make Q the subject of formula when \(L=\frac{4}{3}M\sqrt{PQ}\)
A
\(\frac{9L^2}{16M^2}P\)
B
\(\frac{3L}{4M\sqrt{P}}\)
C
\(\frac{\sqrt{3L}}{4MP}\)
D
\(\frac{3L^2}{16M^2}P\)
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13
If 2x2 - kx - 12 is divisible by x-4, Find the value of k.
A
4
B
5
C
6
D
7
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14
Factorize complete;y (4x+3y)2 - (3x-2y)2
A
(x+5y)(7x+y)
B
(x+5y)(7x-y)
C
(x-5y)(7x+y)
D
(x-5y)(7x-y)
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15
If x - 3 is directly proportional to the square of y and x = 5 when y =2, find x when y = 6.
A
30
B
21
C
16
D
12
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16
If p = varies inversely as the square of q and p=8 when q=4, find when p=32
A
+/-16
B
+/-8
C
+/-4
D
+/-2
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17
Find the range of values of x which satisfy the inequalities 4x - 7 \(\leq\) 3x and 3x - 4 \(\leq\) 4x
A
-4 \(\leq\) x \(\leq\) 7
B
-7 \(\leq\) x \(\leq\) 4
C
x \(\geq\) -7
D
-7 \(\leq\) x \(\leq\) 6
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18
Solve the quadratic inequalities x2 - 5x + 6 ≥0
A
x ≤ 2, x ≥ 3
B
x ≤ 3, x ≥ 2
C
x ≤ -2, x ≥ -3
D
x ≤-3, x ≥ 2
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19
The fifth term of an A.P is 24 and the eleventh term is 96. Find the first term.
A
12
B
4
C
-12
D
-24
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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
A
commutative and close on the set of positive integers
B
neither commutative nor closed on the set of ppositive integers
C
commutative but not closed on the set of positive integers
D
not cummutative but closed on the set of positive integers
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