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Create 2125.py

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	`1`	`+class Solution:`
	`2`	`+ def numberOfBeams(self, bank: List[str]) -> int:`
	`3`	`+ arr = [row.count("1") for row in bank if "1" in row]`
	`4`	`+ res = 0`
	`5`	`+ for i in range(len(arr)-1):`
	`6`	`+ res+=(arr[i]*arr[i+1])`
	`7`	`+ return res`
	`8`	`+`

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