By considering the given pattern, write down the number of circles in
- Pattern 13
- Pattern 80
- Pattern 346
(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 13
= 13 x 4 + 2
= 54
(b)
Number of circles for Pattern 80
= 80 x 4 + 2
= 322
(c)
Number of circles for Pattern 346
= 346 x 4 + 2
= 1386
Answer(s): (a) 54; (b) 322; (c) 1386
