By considering the given pattern, write down the number of circles in
- Pattern 7
- Pattern 81
- Pattern 336
(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 7
= 7 x 4 + 2
= 30
(b)
Number of circles for Pattern 81
= 81 x 4 + 2
= 326
(c)
Number of circles for Pattern 336
= 336 x 4 + 2
= 1346
Answer(s): (a) 30; (b) 326; (c) 1346