Q. 11

Is 299 any term in the sequence of numbers 5, 11, 17, 23, …?

Answer :

The arithmetic progression is 5, 11, 17, 23, ….
Here, First term a = 5 and common difference = 11 – 5 = 6
Let us assume that nth term an of the progression is 301.
we know, an = a + (n -1)d


Where,


a = First term of AP
d = Common difference of AP
and no of terms is ‘n’



299 = 5 + (n – 1) × (6)
299 = 5 + 6n -6
300 = 6n
n = 5


Hence, Yes, 299 is the 5th term of the progression.


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