StayAliveFren
StayAliveFren StayAliveFren
  • 09-07-2020
  • Mathematics
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How many 4-digit numbers divisible by 5, all of the digits of which are odd, are there?

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gilbertazavedo72
gilbertazavedo72 gilbertazavedo72
  • 09-07-2020

Answer: 125

Step-by-step explanation:

For any number to be divisible by 5 it must end in either 0 or 5, thus for a 4 digit odd number it should end with 5 eg.1005,1015,1055 etc.

The exact number of 4 digit odd nos divisible by 5 can be calculated by using Principle of counting:

Therefore, no of possible numbers are: 5x5x5x1=125 numbers

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