Aptitude - Numbers - Discussion

Discussion Forum : Numbers - General Questions (Q.No. 28)
28.
If n is a natural number, then (6n2 + 6n) is always divisible by:
6 only
6 and 12 both
12 only
by 18 only
Answer: Option
Explanation:

(6n2 + 6n) = 6n(n + 1), which is always divisible by 6 and 12 both, since n(n + 1) is always even.

Discussion:
27 comments Page 3 of 3.

NIRANJAN said:   7 years ago
If 46N is divisible by 18 then what is the value of N?

Emi said:   1 decade ago
What is mean product of even, odd is always even?

Vishnu said:   1 decade ago
Hey I don't understand this problem please help!

Karma said:   1 decade ago
I don't understand this problem please help.

Prudvi said:   8 years ago
The numbers should be 6, 12, 18, 24.

Sandeep said:   1 decade ago
Product of even, odd is always even.

Akhil said:   1 decade ago
How is n(n+1) proved an even numer?


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