# How many numbers from 1 to 1000 that contain a digit 7?

1
dari careen1

## Jawapan

2016-04-02T13:43:53+08:00

### Ini Jawapan Diperakui

Jawapan diperakui mengandungi maklumat yang boleh dipercayai dan diharapkan yang dijamin dipilih dengan teliti oleh sepasukan pakar. Brainly mempunyai berjuta-juta jawapan berkualiti tinggi, semuanya disederhanakan dengan teliti oleh ahli komuniti kami yang paling dipercayai, tetapi jawapan diperakui adalah terbaik di kalangan terbaik.

Let's enumerate the numbers between 1 and 1000 inclusive on a table:

ABCD...1...2...3...4...5...6...7...8...9..10blahblahblahblah.998.9991000

Note that in column A, the digit 1 appears once. No other digits appear.

In column B, the digit 1 appears 100 times (in 100-199) The digit 2 also appears 100 times (200-299). So do 3, 4, 5, 6, 7, 8, and 9. The digit 0 appears only once (in 1000)

In column C, the digit 1 appears 100 times (10-19, 110-119, 210-219, ..., 910-919), the digit 2 appears 100 times (20-29, 120-129, 220-229, ..., 920-929). Same logic for digits 3, 4, 5, 6, 7, 8, 9. The digit 0 appears 91 times (100-109, 200-209, ..., 900-909, and 1000).

In column D, the digits 1 appears 100 times (1, 11, 21, 31, ..., 991), same logic for digits 2 thru 9. The digit 0 also appears 100 times (10, 20, 30, ..., 990, 1000)

Combining columns A, B, C, and D, the digit 0 appears 192 times (0+1+91+100). The digit 1 appears 301 times (1+100+100+100). All other digits appear 300 times (0+100+100+100).

So the digit 1 appears the most (301 times) and the digit 0 appears the least (192 times)

hehexx ...if any wrong im sorry

i hope it will be correct answer

bye bye