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JAMB 2002 · UME · Q23

The range of the data k+2,k−3,k+4,k−2,k,k−5,k+3,k−1k + 2, k - 3, k + 4, k - 2, k, k - 5, k + 3, k - 1 and k+6k + 6 is

Worked solution (try it first)
  1. The largest value is k+6k + 6 and the smallest is k−5k - 5.
  2. The range is (k+6)−(k−5)(k + 6) - (k - 5).
  3. The kk terms cancel, leaving 6+5=116 + 5 = 11, option D.

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