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Q.

What is the nth term of an arithmetic sequence 11,22,33,44....?


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a

n

b

n-1

c

2n

d

11n  

answer is D.

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Detailed Solution

The given AP is 11,22,33,44....
From the AP, we get that,
a = 11 and d = 11.
We know that nth term of an AP is given as, tn=a+(n-1)d. So, we get
an=11+(n-1)11
⇒an=11+11n-11
⇒an=11n
Therefore, the general term of the AP is 11n.
Hence, the correct option is 4.
 
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