# Questions on Algebra: Divisibility and Prime Numbers answered by real tutors!

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 Question 816860: The sum of two consecutive odd numbers is 276. What is the larger number? Click here to see answer by richwmiller(10278)

 Question 816219: Start with smallest integer, p1 + p2 + p3 + p4....pn >2007 If p1 =1, p2 =2, p3=3, p4 =5...all are prime numbers. What is the value of pn? Click here to see answer by ewatrrr(11175)

 Question 816098: how do you write 50 as a product of prime factors Click here to see answer by richwmiller(10278)

 Question 815177: if both r & s are integers > 1 ,also 11(s-1)=13(r-1) then the remainder when r+s is divided by 8 is ? A.2 B.3 C.5 D.7 Click here to see answer by KMST(2478)

 Question 809374: Write 54 as a product of prime factors Click here to see answer by JBarnum(2088)

 Question 808883: I need to simplify [-6(2x - 5) - 4x + 8] what is the answer? Click here to see answer by TimothyLamb(824)

 Question 803431: for each integer n, its square can be written as n^2 = 10*k+r where r is an integer in the range 0 less than or equal to r less than or equal to 9. Determine which values of r can occur and which cannot. Click here to see answer by Edwin McCravy(9717)

 Question 800889: A student found that all three digit numbers of the form abc, where a+b is a multiple of 7, are divisible by 7. She would like to know why. Give an algebraic expression. Click here to see answer by KMST(2478)

 Question 800377: I am less then 90, I am a multiple of 5, and the sum of my digits is 9 Click here to see answer by josmiceli(10616)

 Question 798251: If 8 less than the product of a number and -3 is greater than 7, which of the following could be that number? Click here to see answer by stanbon(60771)

 Question 796952: which of the following can be divided by 2 but not by 10 Click here to see answer by solver91311(18785)

 Question 794531: I am having a serious brain freeze. The results to a question that I had was X=91/26 and that is 350 on a calculator. I need to compute this by hand and it appears I cant do simple division any more. I know that 91 can only go into 260 twice because 91 times 3 is 273. Please let me know what elementary step that I am missing. Click here to see answer by Alan3354(34677)

 Question 792544: How do I find the divisibility pattern for 156 Click here to see answer by josgarithmetic(3315)

 Question 792481: What is the largest five-digit number that is divisible by 3 ? Click here to see answer by KMST(2478)

 Question 792475: Hi, I'm stuck with this problem... I don't really know how to tackle it. So if you can help me that'd be much appreciated. Let a be a non-negative integer, written in standard decimal notation as akak−1 . . . a2a1a0, where 0 ≤ ai ≤ 9 for i = 0,1, . . . , k. Prove that a is divisible by 8 if, and only if, 4a2 + 2a1 +a0 is divisible by 8. Click here to see answer by KMST(2478)

 Question 790622: What is the least common multiple(LCM) of 18 and 8? A. 8 B. 438 C. 864 D. 1,000 Click here to see answer by jim_thompson5910(29613)

 Question 786566: What is the smallest number that has 2,3,4,5 and 6 as factors ? Click here to see answer by dfollett76(12)
 Question 786566: What is the smallest number that has 2,3,4,5 and 6 as factors ? Click here to see answer by Edwin McCravy(9717)

 Question 785747: When 391758 and 394915 are divided by a certain three digit number, the three digit remainder is the same i each case. Find the divisor. Click here to see answer by mananth(13127)

 Question 785202: how many prime factors are their of number 666666 ? Click here to see answer by Edwin McCravy(9717)

 Question 781924: how do i find the quotient of 204 and 12 ? Click here to see answer by stanbon(60771)

 Question 778575: a lock can only be opened by using a 3-digit number. Saqi sets this 3-digit number to be the largest prime number under 1000. what is the number? Click here to see answer by Alan3354(34677)

 Question 770736: If g(x)=3x-5, determine the function of ƒ for which g(ƒ(x))=15x^2-6x+4. Click here to see answer by oscargut(1838)

 Question 769969: There is a specific number of pens available for three students. The first student takes one third of the pens, the second student also takes one third of the pens and the third student takes one third of the remaining third of the pens. The students distribute the remaining pens evenly among each other. What was the initial total number of pens? Click here to see answer by ramkikk66(540)

 Question 766834: what do you get when 3 is divided by n equals 20 Click here to see answer by tommyt3rd(3721)

 Question 766365: What is the least five-digit number which is divisible by 8, 9, and 12? Click here to see answer by stanbon(60771)

 Question 764861: the prime factors of a two igit number are 5,2 an 7 what is the number?? Click here to see answer by ramkikk66(540)

 Question 764863: the prime factors of a two digit number are 5,2 and 7 what is the number?? Click here to see answer by ramkikk66(540)

 Question 764663: im confused with prime numbers and i need help fast im starting 6th grade!!!!!!!!!!!!!!!!!!!! Click here to see answer by MathTherapy(1817)
 Question 764663: im confused with prime numbers and i need help fast im starting 6th grade!!!!!!!!!!!!!!!!!!!! Click here to see answer by josgarithmetic(3315)

 Question 764659: What is the remainder of 16,246 divided by 9? Click here to see answer by MathLover1(7480)
 Question 764659: What is the remainder of 16,246 divided by 9? Click here to see answer by josgarithmetic(3315)

 Question 763360: What should be the smallest digit in place of *, if the number is to be divisible by 3. A) 24, * ,75 Click here to see answer by Alan3354(34677)

 Question 645405: Pls.answer this. Use continuous division to get the prime factorization of each number. 1. 1432 2. 4239 3. 9125 4. 6012 5. 1029 6. 1260 7. 2322 8. 4986 Click here to see answer by tommyt3rd(3721)

 Question 645411: Please answer this. Use continuous division to get the prime factorization of each number. 1. 1432 2. 4239 3. 9125 4. 6012 5. 1029 6. 1260 7. 2322 8. 4986 Click here to see answer by tommyt3rd(3721)

 Question 577062: when y=3, which of the following is false? y is prime and y is odd y is odd or y is even y is not prime and y is odd y is odd and 2y is even Click here to see answer by tommyt3rd(3721)

 Question 603801: For the numbers below write their prime factorization and compute their gcd and lcm: (i) 831600 (ii) 70560 Click here to see answer by tommyt3rd(3721)