CBSE Class 10 Answered
How many 1's are there between 1 and 1000?Can u please explain the method of doing this question?
Asked by | 25 Nov, 2012, 10:53: PM
Expert Answer
Total number of arrangement of digit in 3 places =10*10*10=1000
total number of digits involved=1000*3=3000
and all the digits are equally likely therfor each one will occur 3000/10=300 times
Therfor number of 1's occuring =300
Answered by | 01 Dec, 2012, 12:23: AM
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