Pages counting

There are pages numbered from 2 to 104 in the book. How many digits have to be printed to number the pages?

Correct result:

n =  203

Solution:

n=1 (102)+2 (10010)+3 (104100+1)=203



We would be very happy if you find an error in the example, spelling mistakes, or inaccuracies, and please send it to us. We thank you!






Showing 0 comments:
avatar




Tips to related online calculators
See also our variations calculator.
Would you like to compute count of combinations?

Next similar math problems:

  • Dinning room
    cukriky_14 How many different combinations can we choose if there are 3 soups, 5 kinds of main dish and 2 desserts in the dining room?
  • Three-digit numbers
    numbers_2 We have digits 0,1,4,7 that cannot be repeated. How many three-digit numbers can we write from them? You can help by listing all the numbers.
  • Game 27
    dice_4 Susan wanted to play the game. In the beginning, the first says a number from 1 to 8. Then the second player adds a number from 1 to 5 and tells the sum. Again, the Susan adds a number from 1-5 and say sum and etc. . . The winner must say the number 27. W
  • Tickets
    tombola_4 On Monday, 33 tickets were sold. Every next day, twice as many as the previous day. How many tickets were sold on Friday and how many totally from Monday to Friday?
  • To improve
    one_2 To improve her handwriting Paula practices writing the numbers 1 to 200 in words. How many times will she have written the word "one" in all?
  • Sick
    tabletky Sick Marcel already taken six tablets, which was a quarter of the total number of pills in the pack. How many pills were in the pack?
  • Year 2020
    eq222 The four-digit number divided by 2020 gives a result of 1, **. (Can not be in form 1,*0. ) Write all the options.
  • Pins 2
    pin_keyboard how many different possible 4 digits pins can be found on the 10-digit keypad?
  • Expressions with variable
    plusminus This is algebra. Let n represent an unknown number and write the following expressions: 1. 4 times the sum of 7 and the number x 2. 4 times 7 plus the number x 3. 7 less than the product of 4 and the number x 4. 7 times the quantity 4 more than the number
  • Sum of seven
    numbers_5 The sum of seven consecutive odd natural numbers is 119. Determine the smallest of them.
  • The square
    numbers_49 The square root of 25 times the square root of 81 is what number?
  • Seven
    post_1 Seven friends agree to send everyone a holiday card. How many postcards were sent?
  • Crocuses
    kvetinky The garden grow daffodils, crocuses and roses. 1400 daffodils, crocuses is 462 more and roses is 156 more than crocuses. How many are all the flowers in the garden?
  • Factory
    factory_1 In the factory workers work in three shifts. In the first inning operates half of all employees in the second inning and a third in the third inning 200 employees. How many employees work at the factory?
  • Combine / add term
    combine Combine like terms 4c+c-7c
  • Percentages
    percent2 Expressed as a percentage:
  • Double percent
    percents What is 40% of 80% of 11800?