Subject: General Aptitude · Chapter: Number System · Exam: · Marks: · Difficulty:
Is 52563744 divisible by 24?
Answer
Answer (as printed):
Explanation
24 = 3 × 8, where 3 and 8 are co-primes. The sum of the digits in the given number is 36, which is divisible by 3. So, the given number is divisible by 3. The number formed by the last 3 digits of the given number is 744, which is divisible by 8. So, the given number is divisible by 8. Thus, the given number is divisible by both 3 and 8, where 3 and 8 are co-primes. So, it is divisible by 3 × 8, i.e. 24.
Explanation as extracted from the printed page; notation may be imperfect.