By considering the given pattern, write down the number of circles in
- Pattern 15
- Pattern 34
- Pattern 311
(a)
Pattern for the number of circles
Pattern 1: 1 x 4 + 2 = 6
Pattern 2: 2 x 4 + 2 = 10
Pattern 3: 3 x 4 + 2 = 14
Pattern 4: 4 x 4 + 2 = 18
Formula
Number of circles = Pattern number x 4 + 2
Number of circles for Pattern 15
= 15 x 4 + 2
= 62
(b)
Number of circles for Pattern 34
= 34 x 4 + 2
= 138
(c)
Number of circles for Pattern 311
= 311 x 4 + 2
= 1246
Answer(s): (a) 62; (b) 138; (c) 1246
