Question

if 21y5 is a multiple of 9,where y is a digit,what is the value of y?​

Answer 1

Answer:

Step-by-step explanation:

Hello friend,

Heres your answer:

Property:

If a number should be divisible by nine, then the sum of the digits must be divisible by nine.

According to the property:

2 + 1 + y + 5 = Multiples of nine

=> 8 + y = 9 (suppose, because y must be 1 digit)

therefore y= 1 only.

ANSWER = 2115

HOPE IT HELPS U!!!!!!

PLZ MARK IT AS THE BRAINLIEST

Answer 2

Answer:1

Step-by-step explanation:

21y5

Divisibility of 9=sum of all the digits is a multiple of 9.

A.T.Q

2+1+y+5=9

8+y=9

y=9-8

y=1

The number is 2115.

Plz mark me as th brainliast.......