Question

If ?724 is divisible by 7, then ? can be replaced by which of following digits?

Answer 1

Answer:

no 724 can not be divisible by 7 , if 4 is replaced by 8 it will be

Answer 2

Step-by-step explanation:

trail & error method

first in place of ? keep 1 then it becomes 1724 now divided it with 7. it leaves remainder 2

now, replace with 2 it becomes 2724. now divide with 7. it leaves remainder 1

next replace with 3 it becomes 3724 now divide with 7 it can be divisible. remainder will be 0