the digits 4 and 7 of the number 543728 are interchanged. find the difference between the new number so formed and the original number.
caylus:
There are 24 possibilities of difference. (4!)
Sorry, that's false: 9 possibilities with 1234 we can form 2143,2341,2413,3142,3412,3421,4123,4312,4321 the digit means the positions of the digits 4328.
read of the digits 5328
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70000-400=69600 (Answer)
wrong ans.
How
See and read q.
ans. is coming 29700
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19700 is correct answer
wrong ans
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