Page 62 - NUMINO Challenge_M2
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A calendar problem can be solved by considering the number

of days in each month.
On a certain year, October 29th is a Sunday. In the same year,
what day is December 1st?

October has 31 days Sun Mon Tue Wed Thur Fri Sat
and November has 30 29 30 31
days. Draw a calendar
to show all the dates 1
that are given in the 8
problem. 15
22
December 1st is a 29 30
Friday.
1

EExxeerrcciissee The following shows dates of a certain year. Find the date that is
not on the same day as the other dates.

6/23 7/1 7/7 7/28 8/4

EExxpplloorree Use the rule of changes in the number of rocks to find the
number of rocks in any position.

1st 2nd 3rd 4th 5th

The number of rocks is increasing by 2.

1st 2nd 3rd 4th

The number of rocks is increasing by 2, 3, 4,

59Problem Solving
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