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Question

Find the missing number:

1050250630150420?


A

120

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B

50

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C

100

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D

200

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Solution

The correct option is C

100


For the first two rows:

50÷10=5 and 250÷50=5

30÷6=5 and 150÷30=5

So, we observe that in a row:

Number in the second column = 5 × Number in the first column

Number in the third column = 5 × Number in the second column

So, 5 × 4 = 20 and 5 × 20 = 100

Hence, the missing number is 100.


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