Question

Raju asks Deepa to find the total of all the numbers insides the $3\times 3$ box marked in the calendar. Deepa found it very quickly using a easy method. What is her answer?

• A. 90
• B. 98
• C. 108
• D. 114

Answer 1

The correct option is C 108

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.
$\therefore$ The answer is the total.
In this case,
1. Middle number is 12.
2. $9\times 12=108$

$\therefore$ 108 is the total of all the numbers inside the $3\times 3$ box.