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Calendar Calculations

The sum of th...

Question

The sum of the all the dates enclosed in the given box in the calendar is .

A

99

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B

81

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C

90

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Solution

The correct option is B 81
Easy way to find the total of all the numbers inside the $3 \times 3$ box inside the calendar:

1. Select the middle number.
2. Multiply it with 9.

$∴$ The answer is the total.
In this case,
1. Middle number is 9.
2. $9 \times 9 = 81$

$∴$ 81 is the total of all the numbers inside the $3 \times 3$ box.

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