Multiple choice

Directions: Complete the series.

5, 15, 35, 65, 105, 155, ?

  1. 215

  2. 165

  3. 175

  4. 185

  5. 195
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A Correct answer
Explanation

As is clear from the given series, every term is added successively to 10, 20, 30, 40, 50 ... to get the next term.

5 + 10 = 15     15 + 20 = 35     35 + 30 = 65     65 + 40 = 105    105 + 50 = 155  

Similarly, 155 + 60 = 215

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