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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 D
Working through the diagram in columns, the value at the bottom of each column equals the sum of the top 2 numbers, minus the sum of the next 2 numbers. So,

(3 + 21) - (4 + 9) = x
24 - 13 = x
x = 11.
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