1. Write any two consecutive two digit number (say, 35, 36)
Change the position of digits in each number.(53, 63)
Subtract the smaller number from the larger.
63 - 53 = 10
2. 41, 42
24 - 14 = 10
3. 23 , 24
42 - 32 = 10
4. 65 , 66
66 - 56 = ??
5. 74, 75
57 - 47 = ??
Try with more pairs.
What do you see?
The answer is always 10.
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