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How many 4 digit number are there with no digit repeted? |
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Answer» If you have any confusion regarding my answer please tell me I\'ll try to clear it There are 10no. To be filled in four boxes to make 4digit no.i-e;0 to 9So 44 digit number with out repeating =9×9×8×7=81×56 =4536 7.8.9.10 144 4 digit number has give the no. Can not be repeted \u200c[4]*[3]*[2]*[1]= 24 4*3*2*1=24 |
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