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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
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Look at the birth certificate of Bincy.
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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.
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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 =
Write down the time for each picture. For some pictures, the time is already written and you must draw the hands on the clock. In others, you have to write the time shown by the clock.
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Kusum gets up early in the morning. |
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She brings water from the well. |
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At six-thirty in the morning. |
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She cleans her house. |
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She goes to school. |
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At eight o'clock. |
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She is studying in school. |
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She comes back from school. |
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1 o'clock in the afternoon. |
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She takes lunch with her brother and grandmother. |
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She plays with her friends. |
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Five-thirty in the evening. |
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She listens to a story from her grandmother before she sleeps. |
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9 o'clock at night. |
