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JAMB Mathematics Past Questions & Answers - Page 91

451.

The venn diagram shows a class of 50 students with the games they play. How many students play only two games?

View answer & explanation

Correct answer is A

Number of students that plays only two games = 4 + 8 + 3 = 15

452.

From the diagram above, Find the value of < ROP

110^o

70^o

95^o

85^o

View answer & explanation

Correct answer is C

< ROP = 95^o (Exterior angle of cyclic quadrilateral)

453.

In the diagram above, l₁ is parallel to l₂, Find the value of < PMT

82^o

36^o

72^o

118^o

View answer & explanation

Correct answer is A

< MPT = 180^o - 118^o = 62^o

< PML = 62^o ( Alternative angle)

y + 2y + 10^o + 62^o = 180^o (Angles on a straight line)

3y = 180 - 72
$\frac{3y}{3}$ = $\frac{108}{3}$
y = 36^o

< PMT = 2y + 10 = 2(36) + 10 = 82^o

454.

The sum of the interior angles of a polygon is a given as 1080o. Find the number of the sides of the polygon.

View answer & explanation

Correct answer is D

$\frac{(n - 2) 180}{180}$ = $\frac{1080}{180}$

(n - 2) = 6
n = 6 + 2 = 8

455.

From the diagram above, find the value of < OTQ

230^o

55^o

115^o

65^o

View answer & explanation

Correct answer is D

< OTQ = $\frac{130}{2}$
= 65^o

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