Digit sum

Determine for how many integers greater than 900 and less than 1,001 has digit sum digit of the digit sum number 1.

Correct answer:

n =  1

Step-by-step explanation:

c=1000 c1=C(1000)=1+0+0+0=1 c2=C(c1)=1 n=1=1



Did you find an error or inaccuracy? Feel free to write us. Thank you!



avatar







You need to know the following knowledge to solve this word math problem:

Related math problems and questions:

  • How many
    zlomky How many integers are greater than 547/3 and less than 931/4?
  • How many
    numbers2 How many numbers are less than 222 with a digit sum is 8?
  • Two-digit number
    2digits I am a two-digit number less than 20. When I divide by three, then you get the rest one, and when you divide me by four, you get also rest 1. What number am I?
  • Digit sum
    numbers Find the smallest natural number n, the digit sum of which is equal to 37.
  • Three-digit
    numbers How many three-digit natural numbers are greater than 321 if no digit in number repeated?
  • How many
    numbers2 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.
  • PIN code
    pin PIN on Michael credit card is a four-digit number. Michael told this to his friend: • It is a prime number - that is, a number greater than 1, which is only divisible by number one and by itself. • The first digit is larger than the second. • The second d
  • Tissues
    harmasan The store got three kinds of tissues - 132 children, 156 women and 204 men. Tissues each species were packed into boxes after the number of pieces the same for all three types (and greatest). Determine the number, if you know that every box has more than
  • Reminder and quotient
    prime There are given numbers A = 135, B = 315. Find the smallest natural number R greater than 1 so that the proportions R:A, R:B are with the remainder 1.
  • Digits
    numbers2 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?
  • All pairs
    cisla Determine all pairs (m, n) of natural numbers for which is true: m s (n) = n s (m) = 70, where s (a) denotes the digit sum of the natural number a.
  • Sum of seven
    numbers The sum of seven consecutive odd natural numbers is 119. Determine the smallest of them.
  • Digit sum
    cisla How many are three-digit numbers that have a digit sum of 6?
  • 7 digit number
    numbers2 If 3c54d10 is divisible by 330, what is the sum of c and d?
  • Unknown number 7
    percents2 16% of the unknown number is by 21 less than unknown number itself. Determine the natural unknown number.
  • 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
  • Divisibility
    numbers Write all the integers x divisible by seven and eight simultaneously, for which the following applies: 100 < x < 200.