Question

geometric progression
a,10,20 find a?
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Answer 1

Answer:

5

Step-by-step explanation:

Since on dividing 3 rd term by second, we will get 2

Similarly if we divide second by 2, we will get 5 as answer.

And point to be noted here is that 2 is common ratio

Answer 2

Answer:

5 think so 5 that sit it is right or wrong