Emily is making a pattern using matchsticks. She has made patterns as shown.

To make the letter L, she uses 2 matchsticks. To make 2 Ls, she uses 4 matchsticks. If this pattern continues and 'a' is the number of matchsticks, tap on the correct equation.

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Solution

For 1 L, she uses 2 matchsticks.

For 2 Ls, she uses 2 × 2 = 4 matchsticks

If this pattern continues, then for 3 Ls, she will use 2 × 3 = 6 matchsticks

For 4 Ls, she will use 2 × 4 = 8 matchsticks

So, the pattern is:
Number of Ls = 2 × Number of matchsticks

Given, number of matchsticks = a
Then, number of Ls = 2 × a

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