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Amazing Mathematical Facts
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Letters 'a', 'b', 'c' & 'd' do not appear anywhere in the
spellings of 1 to 99 (Letter 'd' comes for the first time in Hundred)
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Letters 'a', 'b' & 'c' do not appear anywhere in the
spellings of 1 to 999 (Letter 'a' comes for the first time in Thousand)
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Letters 'b' & 'c' do not appear anywhere in the spellings
of 1 to 999,999,999 (Letter 'b' comes for the first time in Billion)
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Letter 'c' does not appear anywhere in the spellings of
entire English Counting
The Square Magic
|
12 |
1 |
|
112 |
121 |
|
1112 |
12321 |
|
11112 |
1234321 |
|
111112 |
123454321 |
|
1111112 |
12345654321 |
|
11111112 |
1234567654321 |
|
111111112 |
123456787654321 |
|
1111111112 |
12345678987654321 |
The Addition Pyramid
|
1
21
321
4321
54321
654321
7654321
87654321
987654321
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1083676269 |
1
12
123
1234
12345
123456
1234567
12345678
123456789
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1083676269 |
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