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प्रश्न
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 =
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उत्तर
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.
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संबंधित प्रश्न
Think of many different things that can take different times. Make your table as long as you can.
| Takes minutes | Takes hours | Takes days |
| a bath | to stitch a shirt | to knit a sweater |
| to boil milk | to set curd | to weave a sari |
| a school day | for a banana to become ripe |
Irfan’s mother is twice as old as him. She is also 20 years older than him. Guess the ages of Irfan and his mother.
Look at the birth certificate of bincy.

2/5/2002 shows that Bincy was born on 2 ____, in the year 2002.
Look at the birth certificate of Bincy.

What is the registration number of Bincy's certificate?
When were you born?
Arrange the festivals in the order in which they come in the year.
See if this magic works for other lines which have five numbers. What about five numbers on a slanting line? Try this trick with your family and friends. Can you find other magic patterns in the calendar?

On which day does this month end?

How many Thursdays are there in this month?
| Time of the Day in words | On the clock | What do you do at this time? |
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