Question

use euclid's division lemma to show that the cube of any positive integer is of the form 9M 9M + 1 or 9M + 8 we take b = 3.....

y v don't take b= 1 or 2 ​

Answer 1

so that when we cube it we get a multiple of 9. u can also take directly 9. I did by taking 9as b.