Question

Find which of the following are not GP.
1. 1, 4, 9, 16, ......
2. 6, 12, 24, 48, .....
3. 1, -1, 1,-1,....
4. -4, -20, -100, -500, ....
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Answer 1

Answer:

1st is not in G.P rest of all are in geometric progression .

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Answer 2

Step-by-step explanation:

1. 1²,2²,3²,4², .....

2. 6,6×2,6×4,6×8, .....