Question

(d) 3
2. If 64y8 is exactly divisible by 3, then the least value of y is
(a) o
(b) 1
(c) 2.
at walue of xis​

Answer 1

Answer:

Step-by-step explanation:

For a number to be divisible by three, the sum of digits should be divisible by 3.

Here,6+4+8=18,which is divisible by 3 .Hence least value of y=0

Answer 2

If a number is a multiple of 3,

sum of it's digits will be multiple of 3

So,

64y8 is a multiple of 3

6+4+y+8 is a multiple of 3

18 + y is a multiple of 3

So the least value of y = 0

Hope this will help