In the following question, a matrix of certain characters is given. These characters follows a certain trend, row-wise or column-wise. Find out this trend and choose the missing character from the given alternatives.
5
9
8
7
8
6
9
10
7
13
?
19
5
7
8
9
A
9
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B
10
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C
12
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D
15
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Solution
The correct option is D15 First column →(5+8+7)÷4=5 Second column →(9+6+13)÷4=7 Fourth column →(7+10+19)÷4=9 Let the missing number be x. Then, in the third column, we have : (8+9+x)÷4=8 ⇒17+x=32 ⇒x=15. Hence, option D is the correct answer.