Question

If 21 y5 is a multiple of a where Y is a digit the what is the value of y​

Answer 1

Answer:

Since the number 21y5 is a multiple of 9.

So, the sum of its digits 2+1+y+5=8+y is a multiple of 9.

∴(8+y) is either 0 or 9 or 18 or ...

Since y is a digit, so (8+y) must be equal to 9.

i.e., 8+y=9

⇒y=9−8=1

Step-by-step explanation:

Please mark my answer as brainliest please

Answer 2

Answer:

I don't know what is the answer but I will try

Step-by-step explanation:

fsaacjsbssksasnshskksnsbshh I