Question
How many numbers are there between 999 and 10000 such
that at least one of their digits is 5?Solution
There is no digit to be 5 on any place in 4 digitsnumber from 1000 to 9999 = 8*9*9*9 (because of at 1000s place 0 and 5 both cannot come so 8 chances like wise for the unit,10s and100s place 5 cannot come so chance will be 9) =5832 Total number between 999 and 10000 = 9000 So, required numbers are =9000–5832=3168
More ESIC Part B Questions
- In the given number series, find the wrong number.
4, 9, 19, 39, 79, 159, 319 5000, 4050, 3240, 2268, 1360.8, 680.4
Find the wrong number in the given number series.
2, 3, 5, 7, 11, 13, 17, 202600, 3000, 1759, 1275, 746, 170
33 34 37 42 48 58
98, 128, 162, 200, 244, 288
3, 8, 28, 88, 258, 648Â
Find the wrong number in the given number series.
3, 8, 26, 102, 398, 1639- Find the wrong number in the given number series.
7, 16, 34, 70, 144, 290 - Find the wrong number in the given number series.
17, 28, 21, 32, 25, 45
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