Advertisements
Advertisements
Question
Add the three numbers on each of these lines. What do you notice?
5 + 13 + 21 =
6 + 13 + 20 =
7 + 13 + 19 =
12 + 13 + 14 =
Advertisements
Solution
5 + 13 + 21 = 39
6 + 13 +20 = 39
7 + 13 + 19 = 39
12 + 13 + 14 = 39
On adding these numbers, it is noticed that the total of each such line is the same.
APPEARS IN
RELATED QUESTIONS
Think of some other things, some faster and some slower. Make a long list.
How many of you can speak and stamp at the same time?
Write your date of birth in numbers.
Let us look at the calendar for the year 2020.
How many days make a week?
Let us look at the calendar for the year 2020.
Make a circle on these dates in the Calender:
- 26th January
- 14th November
- 31st December.
Is there something special about these dates?
Now look at the calendar of 2020. Also look for the present month and draw any similar square in your notebook. Does the magic work for these?
What is the date on second Saturday?
Is the 21st a Sunday?
Is there any other day in any month which comes 5 times?
Can there be 6 Sundays in a month? Why?
