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Byju's Answer
Standard IV
Mathematics
Addition
Which of the ...
Question
Which of the following options can complete the number tower.
A
30
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B
25
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C
20
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D
15
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Solution
The correct option is
C
20
Adding two adjacent cells right below any cell gives the sum in the top cell.
For example as highlighted in the image below 1 + 2 = 3.
Similarly 8 + 12 = 20. Hence 20 is the missing number in the number tower.
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