Math, asked by hritikdgmailcom4195, 1 year ago

11. If we write all the whole numbers from 200 to 400 then how many of these contain the digit 7 once and only once?

Answers

Answered by paritiwari
0
we will get 7 hundred and ten times
Answered by radhikayadav235
3

Required numbers from 200 to 300 are 207,217,227,237,247,257,267,270,271,272,273,274,275,276,278,279,297

Position of 7 will be same in numbers between 300 to 400

Therefore, Total number of such numbers = 18 + 18 = 36

Similar questions