गुणोत्तर श्रेणी (geometric series) 1, 2, 4, 8, ..., 2n का माध्य किसके द्वारा दिया जाता है?

The sum of the first n terms of a sequence is given by Sn = n2 + 3n. What is the 10th term of the sequence?

Match List - I with List - II: List - IList - IIA. nth term of an Arithmetic ProgressionI. n2[2a + (n - 1)d]B. nth term of a Geometric ProgressionII. arn - 1r - 1, r > 1C. Sum to n terms of an Arithmetic ProgressionIII. a + (n - 1)dD. Sum to n terms of a Geometric ProgressionIV. a rn - 1 Here 'a' is the first term, 'd' is the common difference, and 'r' is the common ratio. Choose the correct answer from the options given below: