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Question
The following numbers are arranged in ascending order: 10, 17, x − 2, x + 1, x + 4, 27, 30. Their median is 21 ∴ The value of x is ______.
Options
19
20
21
22
MCQ
Fill in the Blanks
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Solution
The following numbers are arranged in ascending order: 10, 17, x − 2, x + 1, x + 4, 27, 30. Their median is 21 ∴ The value of x is 20.
Explanation:
Numbers are arranged in ascending order
10, 17, x − 2, x + 1, x + 4, 27, 30
n = 7
The Median will be the 4th number = x + 1 = 21
x + 1 = 21
x = 21 − 1
x = 20
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