By considering the given pattern, write down the number of circles in
- Pattern 9
- Pattern 86
- Pattern 240
(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 9
= 9 x 4 + 2
= 38
(b)
Number of circles for Pattern 86
= 86 x 4 + 2
= 346
(c)
Number of circles for Pattern 240
= 240 x 4 + 2
= 962
Answer(s): (a) 38; (b) 346; (c) 962
