Answer:
The sum of first 10 terms of the sequence defined by
is 135.
Step-by-step explanation:
Given : nth term of a sequence as 
We have to find the sum of first 10 terms of the sequence.
Consider the nth term of a sequence as 
Then put n = 1 to get the first term

put n = 2 to get the next term

put n = 3 to get the next term

put n = 4 to get the next term

Thus, the sequence is of the form 0, 3, 6, 9,.....
Thus, the above is an arithmetic sequence with a = 0 and common difference (d) = 3
Thus, Sum of 10 terms is given by

n = 10 , a = 0 , d = 3
Put we get,

Simplify, we have,


Thus, the sum of first 10 terms of the sequence defined by
is 135.