Question

What is the least number that must be added to 5234 to make it exactly divisible by
(b) 9
​

Answer 1

Answer

4 is the least number that must be added to 5234 to make it exactly divisble by 9

Answer 2

Divisibility rule of 9 => If sum of number is divisible by 9 , then number is divisible by 9

EX

234567 => 2+3+4+5+6+7 = 27

so 27 is divisible by 9 then 234567 us divisible by 9

from your question

5234 => 5+2+3+4 = 14

14+4 = 18

hence 4 is the least number that must be added to 5234 to make it exactly divisible by 9