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प्रश्न
Is this magic possible on a 10 × 10 number chart? Go to the Chapter ‘Fun with Numbers’ and check.
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उत्तर
check with a 10 × 10 number chart
Yes, the magic works in a 10 × 10 number chart also.
The cross lines- 1 + 12 + 23+ … + 89+ 100 = 505
and 10 + 19 + 28+ … + 82 + 91 = 505
As there is no middle line, we have to get average sum of both horizontal lines
5 + 15 + 25+ … + 95 and 6 + 16 + 26 + … 96 = 505
Average sum of both vertical lines
41 + 42 + 43 + … + 50 and 51 + 52 + 53 + … + 60 = 505.
Thus, the magic works here as well.
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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 |
Look at the birth certificate of Bincy.
How old will she be in the year 2052?
Look at the birth certificate of Bincy.
After how many months of Bincy's birth was the certificate issued?
Let us look at the calendar for the year 2020.
How many months does a year have?
Let us look at the calendar for the year 2020.
In which month did you come to class III?
Which festival comes in the beginning of the year?
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 =
Colour all the Sundays in red.
Write the number of days in this month.
What day is it on 13th August?
