Question

1,20,58,134,286,........​

Answer 1

Answer:

1×2+18=20

20×2+18=58

58×2+18=134

134×2+18=286

286×2+18=590

Answer is 590.

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Answer 2

Answer:

The answer is 590.

Explanation:

• When we carefully go through the series we can observe that every number after 1 is a product of 2+18 of the preceding number.

       For example:

                                   1×(2+18)=20

• Therefore if we follow the same trick, we can see a pattern.

• 20×(2+18)=58

• 58×(2+18)=134

• 134×(2+18)=286

• 286×(2+18)=590

• Therefore the answer is 590.

The series will be as follows:

                             1,20,58,134,286,590.