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Thursday 10th Dec. 2020
Paper II & I: Objective & Essay – Mathematics
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2020-WAEC-GCE-Mathematics-ANSWERS
Maths-Obj!
1BDBBBDCDCC
11AACCADADAA
21DDBDADADAD
31AABAADCCDC
41CCBDAABACD
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SECTION A answer Five (5) only.
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(4a)
(4b)
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(3)
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(1)
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(2a)
Let cutlass = x and hoe = y
3x+2y = 85
2x+3y = 90
6x+4y = 170
6x+9y = 270
-5y = -100
y = -100/-5 = 20
:. 2x+3(20) = 90
2x = 90 -60 = 30
x = 30/2 = 15
Cutlass cost GHc15 and hoe cost GHc20
(2b)
y = k(x-4)(x-1) = 24
y = k(x²-5x+4) = 24
x =0
24 = k(4)
k = 24/4 = 6
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(5a)
12/25
Pr(even)=12/25
(5b)
Pr(prime) =9/25
(5c)
Pr(even or prime )
=12/25+9/25
=21/25
(5d)
Pr(both prime and even)
=9/25*12/25
=108/625
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Section B answer Five (5)
Only.
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11a and 11b)
(11c)
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Pls Use This Number 9
(9)
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(8)
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(6)
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(10)
(10b)
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