Observe the patterns given below and identify which number replaces the question mark?
A
7
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B
10
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C
13
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D
15
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Solution
The correct option is C 13 If we look closely at each figure,
Step I: 3 + 12 = 15
Step II: 2 + 7 = 9
So, the result of the addition of the numbers in the top two boxes gives the result in the bottom box.
Similarly, following the same pattern, we get:
Step III: 8 + 5 = 13
So the question mark can be replaced by number 13.