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Missing Number Finding
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Find the missing number?
Missing Number Finding mcq question image

Answer & Solution
Correct Answer: Option A


Splitting the diagram into 3 smaller triangles, with 3 circles each, the sum of the numbers in each smaller triangle is always 21. So,

3 +7 + 11 = 21.
5 + 12 + 4 = 21.
10 + 10 + x = 21.
x = 1.
Missing Number = 1.
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