Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 55)
55.
Which of the following numbers will completely divide (4915 - 1) ?
Answer: Option
Explanation:
(xn - 1) will be divisibly by (x + 1) only when n is even.
(4915 - 1) = {(72)15 - 1} = (730 - 1), which is divisible by (7 +1), i.e., 8.
Discussion:
16 comments Page 2 of 2.
Pranav said:
1 decade ago
it can also be divided by 48 i.e (a^n-b^n is always divisible by a-b)
Alok Niranjan said:
4 years ago
Why it's not 48? Please explain in detail.
(4)
Lohit lalit said:
6 years ago
Anyone, please explain me to get it.
(1)
John said:
1 decade ago
Then why not 50?
Praneel said:
8 years ago
Agree @Rashid.
Zaki said:
6 years ago
Why not 50?
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