Page 168 - NUMINO Challenge_B2

15 Calendars p.128~p.129 Problem solving

Example 30 13 1 Wed Thu Fri Sat Sun Mon Tue

Try It Again 1234567
8 9 10 11 12 13 14
Fri Sat Sun Mon Tue Wed Thurs 15 16 17 18 19 20 21
22 23 24 25 26 27 28
1234567 29 30 31
8 9 10 11 12 13 14
15 16 17 18 19 20 21 It's a Sunday.
22 23 24 25 26 27 28
29 30 31 2 Thu Fri Sat Sun Mon Tue Wed

It's a Sunday. 1234567
8 9 10 11 12 13 14
Example 7, 366, 366, 52, 2 Wednesday 15 16 17 18 19 20 21
Saturday 22 23 24 25 26 27 28
29 30
Type 15-1 Dayless Calendars p.130~p.131

1 Tue Wed Thu Fri Sat Sun Mon When you write the days according to the given
1234567 conditions, the 1st of April is a Thursday, the 1st of
8 9 10 11 12 13 14 May is a Saturday, the 1st of June is a Tuesday, and
15 16 17 18 19 20 21 the 1st of July is a Thursday. Therefore,
22 23 24 25 26 27 28 Independence day, 4th of July, is a Sunday.
29 30
Type 15-2 Changes Due to Leap Years p.132~p.133

2 4 11 18 25 58 1 One year has 365 days and 365 7 52 r1;
therefore, the day after one year has passed is
3 When you write the days and dates according to one day after the same day in the previous year.
the given conditions, the 2nd Wednesday is on Therefore, February 14, 2006 was a Tuesday.
the 9th.
2 2008 is a leap year; therefore, based on 366
7 52 r2, the day for February 14, 2009 is two
days after the day for February 14, 2008.
Tuesday, Wednesday, Thursday, Saturday; 1, 1,
1, 2

3 Since February 14, 2009 is a Saturday, March 14,
2009 is also a Saturday.

4 Saturday, Saturday, Tuesday, Thursday, Sunday;
0, 3, 2, 3.

Answer Key