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Divisibility
Page 5
Questions (531)
In set of 30 different positive integers, every number is even and/or a multiple of 3. If 22 of these numbers are even and 15
2 answers
asked by
David
597 views
What is a counterexample for the conjecture? Conjecture: Any number that is divisible by 3 is also divisible by 6.
A 30 B 26 C 12
3 answers
asked anonymously
109 views
Select the numbers that divide exactly into 965, without a remainder.
2 ***** 4 ****** 5 ****** 10 100
11 answers
asked by
Mindy
487 views
{ 30,31,32,....,100 }
How many numbers in the above set are divisible by 8 ? a. 9 b. 10 c. 11 d. 12 e. 13 please answer and
3 answers
asked by
Thomas
416 views
We need to show that 4 divides 1-n2 whenever n is an odd positive integer.
If n is an odd positive integer then by definition n =
1 answer
asked by
Don(please check my math)
453 views
What is an odd three-digit number that is divisible by a perfect square and 47?
1 answer
asked by
Venus
325 views
Disprove: For every integer a, if 8 divides a, then 6 divides a.
im still stuck. i wrote: Disproof. Suppose 8|a. by definition of
3 answers
asked by
cosette
435 views
Find the probability that a number chosen at random between 1 and 100 is divisible by 2 and 7.
1 answer
asked by
Celina
349 views
Find the largest integer N for which N−6 evenly divides N^3−6.
1 answer
asked by
Drake
325 views
How many ordered pairs of positive integers 1≤k≤n≤50 are there, such that k divides n, and (n/k )!= n!/k! ?
1 answer
asked by
andrew
378 views
How many ordered sets of digits (a,b) are there, such that the number 1ab2⎯⎯⎯⎯⎯⎯⎯⎯ is a multiple of 3?
1 answer
asked by
John A.
277 views
How many ordered pairs of positive integers 1≤k≤n≤50 are there, such that k divides n, and (n/k )!= n!/k! ?
3 answers
asked by
andrew
441 views
if n is an odd positive integer,
then prove that n^2 -1 is divisible by 8
2 answers
asked by
anoynomous
684 views
how many integers, x, for which x/2, x/3 and x/5 is also an integer can be found between 1 and 500? help me!!
1 answer
asked by
jase
258 views
How many positive integers less than 1000 are odd but not a multiple of 5
1 answer
asked by
please help me out!!
475 views
A number of 4 different digits is formed by using 1, 2, 3, 4, 5, 6, 7. Find
the probability that it is divisible by 5. Digits can
1 answer
asked by
Anonymous
365 views
if a number divides one of two numbers but not the other, then it will not divide their sum
3 answers
asked anonymously
29 views
a certain type of candy is sold in small boxes of 8 and large boxes of 15. notice it would be impossible to buy exactly 12
1 answer
asked by
don
426 views
What is a counterexample for the conjecture?
Conjecture: Any number that is divisible by 3 is also divisible by 6. (1 point) 9 12
3 answers
asked anonymously
51 views
A palindrome is a number that is the same when read forwards and backwards, such as $43234$. Find the number of $4$-digit
3 answers
asked by
alice
52 views
I am a number between 20 and 30. When you put me into 6 equal groups, there is a even number in each group and 1 is left over.
3 answers
asked by
Advait
476 views
Let a,b,c be positive integers such that a divides b^2 , b divides c^2 and c divides a^2 . Prove that abc divides (a + b + c)^7
2 answers
asked by
Meenakshi
901 views
Let a,b,c be positive integers such that a divides b^2 , b divides c^2 and c divides a^2 . Prove that abc divides (a + b + c)7 .
4 answers
asked by
Anamika
550 views
Let a,b,c be positive integers such that a divides b^2 , b divides c^2 and c divides a^2 . Prove that abc divides (a + b + c)7 .
2 answers
asked by
Anamika
615 views
Using digits 2, 3, 5, 6, 7 and 9, how many 3-digit numbers can be formed that are divisible by 5 such that the repetition of
3 answers
asked by
kawal
418 views
A fair, six-sided die is rolled eight times, to form an eight-digit number. What is the probability that the resulting number is
1 answer
asked by
confused
469 views
How many positive integers lessthan2009 are divisible byany one perfect square greater than 1678?:
1 answer
asked by
emani
448 views
The digits 2, 3, 4, 7, and 8 are each used once in a random order to form a five-digit number. What is the probability that the
4 answers
asked by
epicmathfailure
586 views
The digits 2, 3, 4, 7, and 8 are each used once in a random order to form a five-digit number. What is the probability that the
3 answers
asked by
bob
505 views
Let m,n,z belong to N such that m and n divide z and gcd(m,n) = 1. Prove that m.n divides z.
1 answer
asked by
Nisha
331 views
What is a counterexample for the conjecture?
Conjecture: Any number that is divisible by 3 is also divisible by 6. A: 12 B: 9 C:
3 answers
asked by
wyatt
21 views
1.Using the principle of inclusion-exclusion find the numbers of integers between 1 and 1000 (inclusive)that are divisible by at
1 answer
asked by
Abbey
618 views
Can you Please explain the answer that I received of 2469? It is the correct answer but I do not understand how to show the
3 answers
asked by
Urgent Please Please
617 views
Would you please explain the steps you used to get the answer 2469.
Thank you Using the 9 digits, 1, 2, 3, 4, 5, 6,7, 8 and 9 you
1 answer
asked by
TO: Steve
514 views
22 is not one
2 answers
asked by
I not here to help just here to take.
25 views
How many integers between 100 and 200 are divisible by 6? (are there any shortcut method to get this?)
3 answers
asked by
PDF
490 views
If x is divisible by 4,5,20. Which of the following statement must also be divisible by 4, 5, 20?
x+4 x+5 x+10 x+20
1 answer
asked by
Lee
307 views
What is a counterexample for the conjecture?
Conjecture: Any number that is divisible by 3 is also divisible by 6. (1 point)
3 answers
asked by
Brody
59 views
160 is divisble by which of the following numbers 2,3,4,5,6,9 or 10
3 answers
asked anonymously
24 views
multiples of 132
3 answers
asked anonymously
14 views
factors of 132
3 answers
asked anonymously
14 views
What is the least positive integer that is divisible by all whole numbers from 1 to 9?
1 answer
asked by
Summone
450 views
14. Read the following conjecture. Any number that is divisible by 3 is also divisible by 6. Find a counterexample to show that
3 answers
asked by
Anonymous
45 views
16. Read the following conjecture. Any number that is divisible by 3 is also divisible by 9. Find a counterexample to show that
3 answers
asked by
Anonymous
49 views
Is the following statement a good definition? Why? An integer is divisible by 100 if and only if its last two digits are zeros.
3 answers
asked by
Anonymous
45 views
Determine the number that 88 is divisible by from the choices provided.(1 point)
11 answers
asked anonymously
349 views
Is the number 23 the only number between 20 and 28 that can't be divisible equally by 2,3,4, or 5
1 answer
asked by
Anonymous
316 views
i am a 3 digit number divisible by 3. my tens digit is 3 times as great as my hundreds digit and the sum of my digits is 15. if
3 answers
asked by
brandon
424 views
what is the probabilty of spinning a divisor of 12?
1 answer
asked by
Brett
448 views
Decide whether or not the first number is divisible by the second.
23,256; 6 A) Yes B) No
1 answer
asked by
Annonom
409 views
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Parent Categories (16)
Algebra
Algebraic Expressions
Arithmetic
Characteristics of Money
Counting principle
Division
Experimental Probability
Mathematics
Number Operations
Number Properties
Number Theory
Numbers
Numbers and Operations
Probability
Problem Solving
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