Divisibility - high school - practice problems
Number of problems found: 69
- Calculate
Calculate the sum of all three-digit natural numbers divisible by five. - Sum of odd numbers
Find the sum of all odd integers from 13 to 781. - Quadrant
In what quadrant is a -1165° angle? - Chebyshev formula
To estimate the number of primes less than x Chebyshev formula is used: Pi(x) = 1.11 (x)/(ln x). Estimate the number of primes less than 30300537. - Sum of AP members
Find the sum of all the numbers between 8 and 258 that are divisible by 5. - Numbers
Write the smallest three-digit number in divisions 5 and 7, and gives the rest 2. - Divisors
The sum of all divisors unknown odd number is 2112. Determine the sum of all divisors of a number that is twice unknown numbers. - Determine 82975
Determine the sum of all positive odd numbers less than 78 - Four-digit number
Find a four-digit number, which quadrupled written backward is the same number. - Three-digit integers
How many three-digit natural numbers exist that do not contain zero and are divisible by five? - Infinite decimal
Imagine the infinite decimal number 0.99999999... That is a decimal and her endless series of nines. Determine how much this number is less than the number 1. Thank you in advance. - No. of divisors
How many different divisors have number 13 4 * 2 4? - Arithmetic progressions.
Find the sum of all the numbers between 9 and 204, which is exactly divisible by 3. - Big number
What is the remainder when dividing 10 by 9 to 47 - 111? - Repair company
The company repairs cars. On the first day, repair half of the contract, the second day, half of the rest, and third-day 8 residue cars. How many total cars did the company repair? - Three-digit 67824
The numbers 1,3,7,4 are given. How many three-digit numbers are there: a) if the numbers can be repeated b) if the numbers cannot be repeated c) how many even three-digit numbers if the numbers can be repeated d) how many odd three-digit numbers if the nu - The sum 2
The sum of five consecutive even integers is 150. Find the largest of the five integers. A.28 B.30 C.34 D.54 Show your solution and explain your answer. - Tiles
The tile has the shape of a square with a side of 15 cm. What dimensions can a rectangle composed of 90 tiles have so that no tile remains? - Permutations
How many 4-digit numbers can be composed of numbers 1,2,3,4,5,6,7 if: and the digits must not be repeated in the number b, the number should be divisible by five, and the numbers must not be repeated c, digits can be repeated - Divisibility
Determine the smallest integer which divided 11 gives remainder 4. When divided, 15 gives remainder 10 and when divided by 19 gives remainder 16.
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