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 Challenge
 Sequence:  A pattern involving an ordered arrangement of numbers, geometric figures, letters, or other objects.

Completing the Sequence: Find the next numbers in the sequences.

Triangular Numbers: Form triangular numbers and look for patterns.

Spreading Rumors: It is important for 8000 people to hear a rumor by May 14. Is this outcome likely to occur if the pattern for spreading the rumor continues as started?