Multiple choice

Find the missing term of the series 34, 34, 43, 69, 134, ?

  1. 200

  2. 188

  3. 258

  4. 412

  5. 520
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The differences are: 34-34=0 (0^3), 43-34=9 (2^3+1?), actually: 34+0^3=34, 34+2^3+1=43, 43+3^3-1=69, 69+4^3-1=134. Pattern is adding cubes. 34, 34+0=34, 34+9=43, 43+26=69, 69+65=134. Differences are 0, 9, 26, 65. These are (1^3-1), (2^3+1), (3^3-1), (4^3+1). Next is 5^3-1 = 124. 134 + 124 = 258.

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