Question

[A] Complete the following series:
1. 5, 7, 11, 17, 25,
2. 3, 9, 27, 81, 243,
3. 1, 4, 9, 16, 25,-
4. 1, 3, 7, 13, 21,
5. 1, 3, 4, 5, 9, 7, 16, _

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Answer 1

Hey friend here is your answer . . . . .

3. 1,4,9,16,25,36

Explanation : The difference between the two numbers goes as the intervals of the table of 2.eg: there are two numbers between 1 and 4, four numbers between 4 and 9 and so on.

5. 1,3,4,5,9,7,16,9

Explanation : In the above one two series are going the are 1)1,4,9,16 . . . in which the difference goes are the table of 2 as in the above one and other one 2) 3,5,7,9 in which the difference is 2. eg: 5-3=2, 7-5=2 and so on.

Hope it helps you ^_^