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Which of these is NOT a triangular number?

Class 6Patterns in Whole NumbersWhole Numbers
  • A36
  • B45
  • C50
  • D55

Step-by-Step Solution

Triangular numbers near here: 36 (1..8), 45 (1..9), 55 (1..10). 50 is not triangular.
Answer: C) 50

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