Find the least value digit which is assigned to * so that the number 1972*471 is divisible by 9.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 5.
Divisibility rule of 9: A number is divisible by 9 if the sum of its digits is divisible by 9.
Sum of digits: 1 + 9 + 7 + 2 + * + 4 + 7 + 1 = * + 31
* = 5
So, the sum of digits = 36 will be divisible by 9