Big numbers

How many natural numbers less than 10 to the sixth can be written in numbers: a) 9.8.7 b) 9.8.0

Correct answer:

a =  1092
b =  728

Step-by-step explanation:

n1=106=1000000 0<n<n1 a=3 3 3 3 3 3+3 3 3 3 3+3 3 3 3+3 3 3+3 3+3=1092
b=2 3 3 3 3 3+2 3 3 3 3+2 3 3 3+2 3 3+2 3+2=728



We will be pleased if You send us any improvements to this math problem. Thank you!



avatar




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

Related math problems and questions:

  • Digits
    numbers_48 How many five-digit numbers can be written from numbers 0.3,4, 5, 7 that is divided by 10 and if digits can be repeated.
  • Digits
    numbers2_18 How many natural numbers greater than 4000 which are formed from the numbers 0,1,3,7,9 with the figures not repeated, B) How many will the number of natural numbers less than 4000 and the numbers can be repeated?
  • Numbers
    numbers_3 How many different 3 digit natural numbers in which no digit is repeated, can be composed from digits 0,1,2?
  • Phone numbers
    old_phone How many 7-digit telephone numbers can be compiled from the digits 0,1,2,..,8,9 that no digit is repeated?
  • Possible combinations - word
    dices2 How many ways can the letters F, A, I, R be arranged?
  • Three-digit numbers
    poker_hand_ranking How many three-digit numbers are from the numbers 0 2 4 6 8 (with/without repetition)?
  • Guests
    hostia How many ways can 9 guests sit down on 10 seats standing in a row?
  • Lunch
    skola_15 Seven classmates go every day for lunch. If they always come to the front in a different order, will be enough school year to take of all the possibilities?
  • How many 4
    numbers2_1 How many 4 digit numbers that are divisible by 10 can be formed from the numbers 3, 5, 7, 8, 9, 0 such that no number repeats?
  • Boys and girls
    dancers There are 20 boys and 10 girls in the class. How many different dance pairs can we make of them?
  • Graduation party
    dancers There are 15 boys and 12 girls at the graduation party. Determine how many four couples can be selected.
  • Bits, bytes
    bits Calculate how many different numbers can be encoded in 16-bit binary word?
  • Shelf
    bookshelf.JPG How many ways are there to arrange 6 books on a shelf?
  • How many
    numbers2_41 How many double-digit numbers greater than 30 we can create from digits 0, 1, 2, 3, 4, 5? Numbers cannot be repeated in a two-digit number.
  • Inverted nine
    clock-night-schr In the hotel Inverted Nine, each hotel room number is divisible by 6. How many rooms can we count with the three-digit number registered by digits 1,8,7,4,9?
  • Bookshelf and books
    bookshelf How many ways can we place 7 books on a bookshelf?
  • Three digits number
    plot How many are three-digit integers such that they no digit repeats?