By considering the given pattern, write down the number of circles in
- Pattern 11
- Pattern 54
- Pattern 391
(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 11
= 11 x 4 + 2
= 46
(b)
Number of circles for Pattern 54
= 54 x 4 + 2
= 218
(c)
Number of circles for Pattern 391
= 391 x 4 + 2
= 1566
Answer(s): (a) 46; (b) 218; (c) 1566