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makkiz [27]
3 years ago
11

How many dots are in the 15th step

Mathematics
2 answers:
xz_007 [3.2K]3 years ago
7 0

Answer:

21

Step-by-step explanation:

every step increases by 1

Lemur [1.5K]3 years ago
5 0

Answer:

210

Step-by-step explanation:

we start at 7 dots in step 1

7+8+9+10+11+12+13+14+15+16+17+18+19+20+21

add all those 210

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