If we put value of n in 4n -1 we get that each term is devisible by 3 but if there is any other way to prove that it is divisible by 3 like how should we do it in Subjective exam??
If we put value of n in 4n -1 we get that each term is devisible by 3 but if there is any other way to prove that it is divisible by 3 like how should we do it in Subjective exam??
Hardeep Singh , 9 Years ago
Grade 12
