Question

Exercise 2.7
1. Which of the following sequences are in G.P.?
(i) 3,9,27,81,... (ii) 4,44,444,4444.... (iii) 0.5
111
.... (v) 1.-5, 25, -125,... (vi) 120,60,30
2. Write the first three terms of the G.P. whose first ter
given below.
(i) a = 6,7 = 3 (ii) a = root2, r = root2 (iii) a =1000,r=2/5
3. In a G.P. 729, 243, 81,... find t7.
4. Find x so that x +6, x + 12 and x + 15 are consecutive terms of a geometric
Progression​

Answer 1

Answer:

1ans is (!)

2ans is (6,18,54)(root2,2,2root2)(1000,400,160)

3ans is (1)