Divisibility - practice problems
Number of problems found: 346
- Four digit codes
Given the digits 0-7. If repetition is not allowed, how many 4 digit codes that are greater than 2000 and divisible by 4, are possible?
- Which 13
Which numbers are perfectly divisible by 3? 45,904 40,404 145,083 16,674 75,035 (use sum of digits)
- What is 20
What is the least number that should be added to 2497 so that the sum of the digits is divisible by 5,6,10
- A six-sided
A six-sided die is rolled once. What is the probability that the number rolled is an even number greater than two?
- Divisible 73494
What digit should X replace so that the number 6X94 is divisible by nine?
- Is prime?
Which of the following numbers is prime? 21,11,18,25
- Divisible 72004
Find the natural number between the numbers 70 and 80 that is divisible without the remainder 5, 3, 15, and 25.
- My digits
My digits are 1, 2, 5, 6, and 7, but not in that order. My ones digit is an even number. My tenths digit is 1. My hundredths digit is a number between 4 and 6. My thousandths digit is the digit with the highest value. I am less than 50000.
- Determine 70224
Determine the number by which all these numbers 22, 18, 25, 15, 35, 10 are divisible without remainder. The number is greater than 1.
- Three-digit 69114
How many three-digit numbers have a digit sum of 6? Write the ratio of the number of created even and odd numbers and adjust it to the basic form.
- Two-digit 68654
List all compound positive two-digit numbers whose greatest common divisor with the number 51 is the number 17.
- Divisible 68644
List all divisible numbers by six and seven and are greater than 79 and less than 91.
- Probability 68594
What is the probability that any two-digit number a) is divisible by five, b) is not divisible by five?
- Divisible 67304
Which number should replace the letter X so that the number 7618X is divisible by three and four?
- Calculate 67294
Calculate the sum of all divisors of the number 70.
- Three-digit 66854
How many three-digit numbers with a digit sum of 9, in which no digit can repeat?
- Expression 66754
Find the largest natural number n for which the value of the expression (37-2n) / 3 is equal to the natural number.
- Find two digits
Find the possible values of A and B if the 6 digit number 2A16B6 is divisible by 4 and 9. Result write as composed number.
- Three-digit 65624
Pablo has five cards with numbers 0, 1, 6, 7, and 9. How many odd three-digit numbers can he form?
- Probability 64764
Petra wrote natural numbers from 1 to 20 on 20 tickets. Milady had one ticket pulled out. What is the probability that Milada will pull out a ticket with a number divisible by three?