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Question
The value of p + q - r in the following magic square is
The value of p + q - r in the following magic square is
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Solution
The correct option is A 4
First we have to find the magic sum.
From the diagonal, magic sum = 6 + 7 + 8 = 21
Now, from the first row, we get p + 3 + 8 = 21
So, p = 21 - 11 = 10
Now, from the second row, we get q + 7 + 9 = 21
So, q = 21 - 16 = 5
Now, from the third row we get 6 + r + 4 = 21
So, r = 21 - 10 = 11
Hence, p + q - r = 10 + 5 - 11 = 4
First we have to find the magic sum.
From the diagonal, magic sum = 6 + 7 + 8 = 21
Now, from the first row, we get p + 3 + 8 = 21
So, p = 21 - 11 = 10
Now, from the second row, we get q + 7 + 9 = 21
So, q = 21 - 16 = 5
Now, from the third row we get 6 + r + 4 = 21
So, r = 21 - 10 = 11
Hence, p + q - r = 10 + 5 - 11 = 4
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