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Dots are arranged in squares, as shown. Which rule gives the number of dots in Shape n?

Class 7Formulas and Rules from PatternsAlgebra

A $2 n$
B $4 n$
Cn + n
Dn × n

Step-by-Step Solution

Shape 1:

1 \times 1 = 1

, Shape 2:

2 \times 2 = 4

, Shape 3:

3 \times 3 = 9

. Shape

n

has

n

rows of

n

dots:

n \times n

.

Answer: D) n × n

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