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Dotty Sequences 
Investigation PowerPoint Presentation


The investigation is set out below and printable square dotty paper is included at slide 4. All answers together with explanations are provided.
Investigate and extend the number sequences to the 10th term generated by: (a) The number of dots on the perimeter of each square.(b) The number of dots contained inside each square.(c) Write down the 100th term of sequence (a).(d) Calculate the 100th term of sequence (b) showing your working. (e) Determine the rule for the nth term in sequence (b).

4 
n 
y 
n 


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