Here is a
multiplication:
159 × 48 = 7632
Can you see something peculiar in this
multiplication? Yes, all the nine digits are different. How many other similar
numbers can you think of?
Answer: one can
think of at least 9 examples:
39× 186 = 7254
18× 297 =5346
28× 157 =4396
42×138 = 5796
12× 483 =5796
48 ×159 =7632
4×1738 =6952
27×198 =5346
4 × 1963 =7852
If you try
patiently, perhaps you many come up with some more.
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