In a calender, sum of any four number taken in a block can always be written as
4(x + 2)
2(x + 2)
4(x + 4)
2(x + 4)
In any calender four number forming a square is always written as
The sum is equal to
= x + x + 1 + x + 7 + x + 8
= 4x + 16
= 4(x + 4)
The sum of three times a number and four times its reciprocal can be written as:
Nine numbers are taken from calender as shown