Question

In writhing all of the integers from 1 to 199,how many times is"1" used?​

Answer 1

140 times 1 is used in writhing all of the integers from 1 to 199

Step-by-step explanation:

1 is used from 1 to 99

1  , 11  , 21  , 31 , 41  , 51 , 61 , 71  , 81 , 91   - 10 times in unit digit

10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18  , 19    - 10 times in ten's Digit

10 + 10 = 20 times

this will repeat from 100 to 199

Hence 20 times 1 in units & tens Digit place

20 + 20 = 40 times 1

now from 1 to 199

1 will be 100 times at 100 place

Hence 100 + 40 = 140 times 1 is used in writhing all of the integers from 1 to 199

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Answer 2

Answer:140 times 1 come

Step-by-step explanation: