3 years ago

A pattern follows the rule "Starting with one, every consecutive line has a number one more than twice the previous line".

1 answer:

4 0

Answer:

The fourth line will have 15 marbles

Step-by-step explanation:

The third line has 7 marbles. So, you double that and add one in order to find the number of marbles in the fourth line.

7*2=14

14+1=15

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