Mathematics !! 2

6.Find the sum to 6 terms of the G.P. 2, 4, 8, ?K
(a). 60 ( b). 61 ( c.) 62 ( d.) 63

7.Find the sum to infinite terms of the G.P. 12, 6, 3, ?K
(a). 21 ( b.) 22 ( c). 23 ( d.) 24

8.The kth term of a G.P. is 2(3^k), find the 4th term.
(a). 2 ( b.) 54 (c.) 162 (d.) 324



WHAT IS ANSWER !! WHY!!