# Natural numbers - high school - math problems

#### Number of problems found: 113

• 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
• Digits 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?
• Three-digit How many three-digit natural numbers is greater than 321 if no digit in number repeated?
• Three-digit integers How many three-digit natural numbers exist that do not contain zero and are divisible by five?
• Find two 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.
• The sum 6 The sum of the 17 different natural numbers is 153. Determine the sum of the two largest ones.
• Sum of the seventeen numbers The sum of the 17 different natural numbers is 154. Determine the sum of the two largest ones.
• Find the sum Find the sum of all natural numbers from 1 and 100, which are divisible by 2 or 5
• Theorem prove We want to prove the sentence: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
• A three-digit numbers Determine the total number of positive three-digit numbers that contain a digit 6.
• Rectangles The perimeter of a rectangle is 90 m. Divide it into three rectangles, the shorter side has all three rectangles the same, their longer sides are three consecutive natural numbers. What is the dimensions of each rectangle?
• Algebrogram Solve algebrogram for sum of three numbers: BEK KEMR SOMR ________ HERCI
• Sum of odd numbers Find the sum of all odd integers from 13 to 781.
• Progression -12, 60, -300,1500 need next 2 numbers of pattern
• Negative difference Find four arithmetic progression members between 7 and -6.
• What are What are the four terms between 4 and 19?
• Two-digit number Digit sum of thinking two-digit natural number is 11. When it exchanging a sequence of digits, given a number which is 27 less than the thinking number. Find out which number I think.
• Fraction Fraction ? write as fraction a/b, a, b is integers numerator/denominator.
• Three digits number From the numbers 1, 2, 3, 4, 5 create three-digit numbers that digits not repeat and number is divisible by 2. How many numbers are there?
• Fruits In the shop sell 4 kinds of fruits. How many ways can we buy three pieces of fruit?

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