0
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'. !!!!!
Still curious? Ask our experts.
Chat with our AI personalities
Beau
Lao
Coach
Add your answer:
Earn +20 pts
What are the factors and prime factors of 189 on the factor tree?
The 8 factors of 189 are 1, 3, 7, 9, 21, 27, 63, and 189. 3 and 7 are prime.
What is the square root of 189?
13.7477271
Which digit in 2345 is in the same place as the 1 in the 189?
3 is in the hundreds place
What is 27x7 equals?
27 x 7 = 189
What is 0.189 in fraction form?
0.189 in fraction form is 189/1000. To convert a decimal to a fraction, you can write the decimal as a fraction over a power of 10. In this case, 0.189 is equivalent to 189/1000 because the decimal point is three places to the right of the tenths place.
