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Read the positions of the orange points P and Q on the number line. How many whole numbers lie between P and Q (not counting P and Q)?

Class 6Successor and PredecessorWhole Numbers
  • A16
  • B17
  • C14
  • D15

Step-by-Step Solution

P is at 38 and Q is at 54. The whole numbers between them are 39, 40, …, 53: that is . (16 is the difference ; 17 counts P and Q too.)
Answer: D) 15

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