(154,2)(77,4)(44,7)(28,11)(22,14)

A mathemtical trick is to note that all three numbers are divisible by '9'.

How do we known this?? Because the sum of the digits in each number adds to '9'.

Hence 189, 567, 2187)

189 ; 1 + 8 + 9 = 18 = 1 + 8 = 9

567 ; 5 + 6 + 7 = 18 = 1 + 8 = 9

2187 [ 2 + 1 + 8 + 7 = 18 = 1 + 8 = 9

189/9 = 21

567/ 9 = 63

2187/9 = 243

All three sub-answer will divide by '3'

Hence 7,9,81 ( There are NO common factors )

Hence

9 x 3 = 27 is the GCF.

NB THis mathemtical 'trick' can only be done with '9'. !!!!!

24

1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 16, 18, 21, 22, 24, 27, 28, 32, 33, 36, 42, 44, 48, 54, 56, 63, 66, 72, 77, 84, 88, 96, 99, 108, 112, 121, 126, 132, 144, 154, 168, 176, 189, 198, 216, 224, 231, 242, 252, 264, 288, 297, 308, 336, 352, 363, 378, 396, 432, 462, 484, 504, 528, 594, 616, 672, 693, 726, 756, 792, 847, 864, 924, 968, 1008, 1056, 1089, 1188, 1232, 1386, 1452, 1512, 1584, 1694, 1848, 1936, 2016, 2079, 2178, 2376, 2464, 2541, 2772, 2904, 3024, 3168, 3267, 3388, 3696, 3872, 4158, 4356, 4752, 5082, 5544, 5808, 6048, 6534, 6776, 7392, 7623, 8316, 8712, 9504, 10164, 11088, 11616, 13068, 13552, 15246, 16632, 17424, 20328, 22176, 22869, 26136, 27104, 30492, 33264, 34848, 40656, 45738, 52272, 60984, 66528, 81312, 91476, 104544, 121968, 182952, 243936, 365904, 731808

question has not been answered yet sorry. :<

The GCF is 13.

18 = 1 x 18, 2 x 9, 3 x 6, 6 x 3, 9 x 2, 18 x 1

one (1) and the number itself

40 + 44 = (4 x 10) + (4 x 11) = 4 x 21 = 84

The reason we do not use zero as the least common multiple (LCM) of two numbers is because the LCM is defined as the smallest positive integer that is divisible by both numbers. Since zero is not a positive integer, it cannot be considered as the LCM of any two numbers. The LCM is always a positive value that is greater than zero

The factor rainbow of 75 is:

• 1 and 75

• 3 and 25

• 5 and 15

Therefore, the factor rainbow of 75 is (1, 75), (3, 25), (5, 15).

'Zero point five four'.

NOT 'zero point fifty four, because you are naming the units incorrectly.

However, some people would say ' zero point fifty four hundredths'.

• 12 16 20 24 28 32 40 44 47

1 x 103, 103 x 1 = 103

It is 3 that is a common prime factor to both numbers

There are seven multiples of six that fall between one and 50: 12, 18, 24, 30, 36, 42, 48.

In one sense, the opposite of the GCF could be the least common factor, but the least common factor of any set of positive integers is 1, so it's not very interesting.

3.8 rounded to the nearest whole number = 4

19 R 3

117 and 225, yes. The rest, no.

All multiples of 12 are also multiples of 6 and they all can be written as the sum of nine numbers.

By the uniqueness of numbers, the answer is 49.

The same as any other set of numbers. Example 1/35 and 1/45

Factor them.

5 x 7 = 35

3 x 3 x 5 = 45

Combine the factors, eliminating duplicates.

3 x 3 x 5 x 7 = 315, the LCD

Multiples of 2 are 2, 4, 6, 8, 10, 12, 14, 16, 18…Multiples of 3 are 3, 6, 9, 12, 15, 18…

Common multiples of 2 and 3 are 6, 12, 18…

The LCM is 6.

The GCF of 28, 42 and 63 is 7.
The GCF is 7.