Natural numbers - math problems

Number of problems found: 488

  • Unknown numbers
    eq222_3 The sum of two consecutive natural numbers and their triple is 92. Find these numbers.
  • 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?
  • 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.
  • Closest natural number
    numbers2_31 Find the closest natural number to 4.456 to 44.56 and 445.6.
  • Big numbers
    numbers_1 How many natural numbers less than 10 to the sixth can be written in numbers: a) 9.8.7 b) 9.8.0
  • Sum of four numbers
    seq_6 The sum of four consecutive natural numbers is 114. Find them.
  • AM of three numbers
    arithmet_seq The number 2010 can be written as the sum of 3 consecutive natural numbers. Determine the arithmetic mean of these numbers.
  • Three-digit
    seven How many do three-digit natural numbers not have the number 7?
  • Two numbers 6
    numbers_49 Fill two natural numbers a, b: 7 + blank- blank = 5
  • The sum
    eq222_1 The sum of the squares of two immediately following natural numbers is 1201. Find these numbers.
  • Sum of the digits
    numbers2 How many are two-digit natural numbers that have the sum of the digits 9?
  • Twenty-five
    prime How many are three-digit natural numbers divisible by 25?
  • Sum of seven
    numbers_5 The sum of seven consecutive odd natural numbers is 119. Determine the smallest of them.
  • Find two
    eq222_7 Find two consecutive natural numbers whose product is 1 larger than their sum. Searched numbers expressed by a fraction whose numerator is the difference between these numbers and the denominator is their sum.
  • Three-digit
    numbers_5 How many three-digit natural numbers is greater than 321 if no digit in number repeated?
  • Three-digit integers
    numbers2_49 How many three-digit natural numbers exist that do not contain zero and are divisible by five?
  • Count of roots
    eggs How many solutions has equation x. y = 7757 with two unknowns on the set of natural numbers?
  • Sum of the seventeen numbers
    seq_sum The sum of the 17 different natural numbers is 154. Determine the sum of the two largest ones.
  • Remainder
    dice What is the remainder of the division of natural numbers 293 and 7?
  • Divisible by nine
    numbers_2 How many three-digit natural numbers in total are divisible without a remainder by the number 9?

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