2003
Mathematics
JAMB
The result of tossing a fair die 120 times is summarized above. Find the value of x
A.
19
B.
20
C.
21
D.
22
Correct Answer: 20
Explanation
12 + 20 + x + 21 + x-1 +28 = 120 2x + 80 = 120 2x = 120 - 80 2x = 40 x = 20
12 + 20 + x + 21 + x-1 +28 = 120 2x + 80 = 120 2x = 120 - 80 2x = 40 x = 20THIS WEEK's
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