MA-103

Number patterns and the nth term

Lower Sec Maths · Secondary 1 · Hard · Number patterns and the nth term

A pattern is formed with dots. Pattern 1 has 3 dots, Pattern 2 has 7 dots, Pattern 3 has 11 dots, and so on. The number of dots increases by 4 each time. Which expression gives the number of dots in Pattern

n

$4n - 1$
$4n + 1$
$3n + 4$
$n + 4$

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