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

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 Algebra: Divisibility and Prime Numbers Solvers Lessons Answers archive Quiz In Depth

 Question 511955: what is the product of the greatest and least two digit prime number Click here to see answer by richard1234(5390)
 Question 511955: what is the product of the greatest and least two digit prime number Click here to see answer by octogirl(7)

 Question 513592: Which of the folllowing is a counterexample of the conjecture below? Conjecture: If a number is divisible by 6 and 2 then it is divisible by 12. a.12 b.36 c.42 d.48 Click here to see answer by richard1234(5390)

 Question 514951: the largest three digit number divisible by 8,12,16 and 18 ???? Click here to see answer by plover(15)

 Question 515865: I am a composite number between 30 & 40. The sum of my prime factors is 10. What number am I? I have narrowed it down to: 32, 33, 34, 36, 38, 39. Click here to see answer by Alan3354(30993)

 Question 518776: I am trying to find a starting point to help my daughter with the following math problem (right now we are working through it manually with boxes and check marks): Following recess, the 400 students in a school lined up and entered the school as follows: the first student opened all the 400 lockers in the school. The second student closed all the even numbered lockers. The third student "changed" all the lockers that were numbered with a multiple of 3 by closing those lockers that were opened and opening those lockers that were closed. The fourth student changed all the lockers that were numbered with a multiple of 4 in the same way, and so on. After all 400 students had entered the building in this fashion, which lockers were left open? Click here to see answer by scott8148(6628)

 Question 519356: Two part question? How many intergers between one and six? I think two the number three and six. Is that correct. How many odd intergers between one and 9? No clue. All I know is an interger is a whole number that is not a fraction. How do you figure out the rest. Click here to see answer by richard1234(5390)

 Question 521884: what number is greater than 150 and smaller than 200 and is divisble by 3 Click here to see answer by umnikmo(75)

 Question 522534: What are the prime factors for these numbers? 90, 24,30,12, 63, 28 Click here to see answer by ankor@dixie-net.com(15649)

 Question 524241: I am a three digit number less than 200. When I am divided by 2,3,6,7 and 9, there is a remainder of 1. What bumber am I? Click here to see answer by Edwin McCravy(8908)

 Question 525394: I apologize if this question does not go with the category, but would you please answer the following. " If 8 and 12 are each factors of K, what is the value of K? Click here to see answer by Edwin McCravy(8908)

 Question 526381: for a={x|x is an integer greater than 7} and b={x|x is an integer less than or equal to 12} idk how to do this and whats the answer i need to kno how to solve this inequality Click here to see answer by stanbon(57307)

 Question 526455: how would you do the factorization of 400? Click here to see answer by bucky(2189)

 Question 526383: the art show is sponsoring four art shows.they hope the average attendance for the four shows will be between 100 and 120,inclusive.the attendance for the first three shows was 100,105,and 91. what possible attendance numbers for the fourth show will allow them to reach their goal? wright and solve an inequality for this solution . how do i even begin to answer this??? whats the answer? Click here to see answer by ankor@dixie-net.com(15649)

 Question 533499: Can you find a number less than 150 that is divisible by 4 different prime numbers? Justify your answer. I have tried a bunch of different methods to figure this out (Including trail & Eroor)and I really can't figure it out. Click here to see answer by scott8148(6628)

 Question 536332: Divide the binary number 10,010,101 by 1010 show details Click here to see answer by Alan3354(30993)

 Question 536865: A group of soldiers consists of less than 10000 individuals. When the commander tries to line up his soldiers in 70 equal rows, he finds that 55 soldiers were left over, when he tries to form 65 equal rows, he finds that 50 soldiers were left over, and when he tries to form 60 equal rows, he finds that 45 soldiers were left over. Is it possible for this commander to line up his soldiers in 55 equal rows? Why or why not? Click here to see answer by KMST(1868)

 Question 537866: Hello...can you tell me the anser to 49 divided by 4,255 Click here to see answer by fcabanski(874)

 Question 542072: I am a number less than 40. One of my factors is 7. the sum of my digits is 8. what number am I? Click here to see answer by Edwin McCravy(8908)

 Question 543190: Hi, Kindly provide the solution for this below mentioned problem? Find the largest 5-digit number which when divided by 84, 72 and 96 leaves remainder 82, 70, and 94 respectively. Regards Gopinath Click here to see answer by KMST(1868)

 Question 547130: Divide: x2 - x + 3 x + 1 Click here to see answer by JBarnum(2044)

 Question 547381: what is divisble by both 3 and 4 Click here to see answer by Alan3354(30993)
 Question 547381: what is divisble by both 3 and 4 Click here to see answer by stanbon(57307)

 Question 547865: which prime numbers can make the number 90? Click here to see answer by JBarnum(2044)
 Question 547865: which prime numbers can make the number 90? Click here to see answer by Alan3354(30993)

 Question 548318: a three digit number is divided by a 1 digit number the quotient is a 2 digit number what can you say about the dividend and the divisor ? Click here to see answer by josmiceli(9669)

 Question 549528: i am a two digit prime number the product of my digits is 24 what number am i? Click here to see answer by mananth(12270)

 Question 549506: What is the remainder when 2^1024 + 5^1024 +1 is divided by 9? Click here to see answer by richard1234(5390)

 Question 550005: Use synthetic division to determine which pair of integers provide both a lower and an upper bound for the zeros of Click here to see answer by stanbon(57307)
 Question 550005: Use synthetic division to determine which pair of integers provide both a lower and an upper bound for the zeros of Click here to see answer by lwsshak3(6491)