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Serial numbers were not required before 1968. Some makers sn'd and some didn't.
The product of 8 & 7 is 56 (8x7=56)
Yes. To get the mean you add all of the numbers in the list together then divide by how many numbers there are in the list : Example: find the mean of 34, 56, 72 and 50 34+56+72+50=212 212 divided by four (as there are four numbers in the list)=53 The mean and average is 53.
There is not a greatest common factor of 56 because there cannot be a greatest common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common.The factors of 56 are 1, 2, 4, 7, 8, 14, 28, and 56.The prime factors of 56 are 2, 2, 2, and 7.Examples:The greatest common factor of 16 and 56 is 8.The greatest common factor of 44 and 56 is 4.The greatest common factor of 56 and 63 is 7.You need at least two numbers to find a GCF.
53
1;2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21.22.23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100
All numbers in the 8x table. 8, 16, 24, 32, 40, 48, 56, 64... etc.
8 x 7 = 56
Factors of 56: 1 2 4 7 8 14 28 56 Factors of 75: 13 5 15 25 75 The GCF of 56 and 75 is 1
Multiples of 3: 123, 45, 6, 78, and 90 Multiples of 7: 7, 14, 28, 56, and 903 Primes: 5, 23, 41, 67, and 809
The factors of 56 are: 1 2 4 7 8 14 28 56 The prime factors are: 2 x 2 x 2 x 7 http://www.classbrain.com/artteach/publish/article_48.shtml?num=56&worksp=
The larger numbers are multiples of the smaller numbers before and after. ... 4 20 5 30 6 42 7 56 ... 4 x 5 = 20 5 x 6 = 30 6 x 7 = 42 7 x 8 = 56 You can say it another way with division: 4 into 20 is 5, 5 into 30 is 6, 6 into 42 is 7, 7 into 56 is 8... (I just added the 4 and the 56 into the sequence to make the pattern easier to see. You can extend it in both directions.)