Rahul makes separate letter T's with matchsticks, as shown for 1, 2 and 3 T's. Which rule gives the number of matchsticks for n T's, and how many are needed for 12 T's?

Question

Accepted Answer

3n; 36. Each T uses 3 sticks (2 on top, 1 down): 1 T → 3, 2 T's → 6, 3 T's → 9. Rule 3n . For n = 12 : 3 × 12 = 36 .

Rahul makes separate letter T's with matchsticks, as shown for 1, 2 and 3 T's. Which rule gives the number of matchsticks for n T's, and how many are needed for 12 T's?

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