Question

Find the digit that makes _2,530 divisible by 9.
A.6
B.5
C.7
D.8

Answer 1

hint : a number is divisible by 9, if its sum of digits is divisible by 9

Answer 2

can u find the sum of digits of given number ?

Answer 3

5?

Answer 4

_2,530

sum of digits = _ + 2 + 5 + 3 = ?

Answer 5

10 + something right ?

Answer 6

all i got was 10

Answer 7

yea thats right!

so adding what to 10 makes it divisible by 9 ?

Answer 8

if you add 8 to 10, it becomes 18. is it divisible by 9 ?

Answer 9

yes?

Answer 10

so,

if you fill the gap wid 8
_2,530

the number becomes divisibly by 9.

Answer 11

does that make sense

Answer 12

yep thanks

Answer 13

np :)