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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
Let us look at the calendar for the year 2020.
List the months which have 30 days.
Let us look at the calendar for the year 2020.
List the months which have 31 days.
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.
- How many weeks are there in July?
- Is it true for all the months?
Fill in the blanks with the correct year:
| 2017 | 2020 | 2019 | 2018 | 2021 | 2023 |
Which year was it two year back?
Which festival comes in the beginning of the year?
How many such lines can you draw?
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.
Is there any other day in any month which comes 5 times?
