Subject: General Aptitude · Chapter: Number System · Exam: · Marks: · Difficulty:
What least value must be assigned to * so that the number 197*5462 is divisible by 9?
Answer
Answer (as printed):
Explanation
Let the missing digit be x. Sum of digits = (1 + 9 + 7 + x + 5 + 4 + 6 + 2) = (34 + x). For (34 + x) to be divisible by 9, x must be replaced by 2. Hence, the digit in place of * must be 2.
Explanation as extracted from the printed page; notation may be imperfect.