Subject: General Aptitude · Chapter: Number System · Exam: · Marks: · Difficulty:
325325 is a six-digit number. It is divisible by
(a)7 only
(b)11 only
(c)13 only
(d)all 7, 11 and 13
Answer
Answer (as printed): D
Explanation
(325 – 325) = 0, which is divisible by 7. So, the given number is divisible by 7. (5 + 3 + 2) – (2 + 5 + 3) = 0. So, the given number is divisible by 11. And, $\frac{325325}{13}=25025$. So, 325325 is divisible by 13. Hence, it is divisible by all 7, 11 and 13.
Explanation as extracted from the printed page; notation may be imperfect.