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SASMO 2017 Secondary 2 (Grade 8) Contest Question 4

SASMO · SASMO 2017 Secondary 2 (Grade 8) Contest

Question 4

Find the next number in the sequence below.
1,5,21,57,121,.....

Question illustration
  1. 185
  2. 202
  3. See the source image for option C.
  4. 256
  5. None of the above