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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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Fill in the blanks with the correct year:
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Here is the calendar for the month of February 2019. Let us mark a square on the calendar and see some magic.
Which is the number in the centre of the square?
How many such lines can you draw?
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?
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Write the number of days in this month.
