2006-10-30 15:16:27 · 16 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Not counting 0, it is 196
28 * 7 = 196
49 * 4 = 196
7 is not a multiple of either number. The multiples of 28 are 0,28,56,84....and so on. The multiples of 49 are 0,49,98....and so on.
2006-10-30 15:21:20 · answer #1 · answered by Nobody 3 · 1⤊ 0⤋
Prime factorize 28 = 7*2*2 and 49= 7*7. Their least common multiple is (7^2)*(2^2). You have to take the greatest power of every prime that occurs in each prime factorization if you know what I mean. Thus the least common multiple of 28 and 49 is 7*7*2*2= 49*4= 196. At least I think that's right:)
2006-10-30 23:20:19 · answer #2 · answered by shaydn e 2 · 2⤊ 1⤋
The LCM is a multiple of 7 and 4. It has to be an even multiple of 49
98 can be negated as it is not a multiple of 4
The next candidate, 196, is perfect as it is a multiple of both 7 and 4.
The LCM of 28 and 49 is 196.
2006-10-31 10:49:37 · answer #3 · answered by Akilesh - Internet Undertaker 7 · 1⤊ 0⤋
7
2006-10-30 23:51:11 · answer #4 · answered by Alicia 2 · 0⤊ 2⤋
7
2006-10-30 23:28:34 · answer #5 · answered by aundrea w 1 · 1⤊ 2⤋
I think it would be 7. the lowest number that can divide into them both is 7. 7 x 3 = 28 and 7 x 7 = 49. That is probably the lowest common multiple.
2006-10-30 23:28:19 · answer #6 · answered by Laura 1 · 1⤊ 2⤋
7
2006-10-30 23:19:24 · answer #7 · answered by Gary H 3 · 1⤊ 2⤋
7
2006-10-30 23:18:39 · answer #8 · answered by Sparrowess 3 · 1⤊ 2⤋
First, factor the numbers. You then take the highest power of each factor and multiply them to find the LCM.
28 = 2^2 * 7^1
49 = 7^2
The highest powers multiplied give you:
2^2 * 7^2 = 196
And I have to point out how distressed I am to see so many people giving you the wrong answer of "7." These people either:
Did not fully read your question or
Do not know the difference between multiples and factors.
Either way, they are not conducive to the learning process.
When in doubt, you can always look at Wikipedia. While it is not an ideal source for serious research papers, it provides a great springboard for many of your questions.
2006-10-30 23:18:03 · answer #9 · answered by Rev Kev 5 · 1⤊ 1⤋
28 = (4)(7)
49 = (7)(7)
You're looking for the lowest number that can be divided by either 28 or 49 with no remainder.
Obviously, the answer is
196 = (4)(7)(7)
Why?
196 = [(4)(7)](7) = (4)[(7)(7)]
196 = (28)(7) = (4)(49)
That's why.
2006-10-30 23:29:54 · answer #10 · answered by Anonymous · 2⤊ 0⤋