If the number of terms in a given data is odd, then its upper quartile is the:
(n+1)/4 th term
n/4 th term
3(n+1)/4 th term
3n/4 th term
The common difference of an arithmetic sequence is −1 and its 4th term is 7. What is its 7th term? And the 11th term?
If the 10th term of a geometric progression is 9 and 4th term is 4, then its 7th term is