Richard is breaking a chocolate bar into smaller pieces. At every step, he breaks a piece either horizontally or vertically:
Eventually, only 1×1 chocolate pieces are left. If the size of the original bar was 10×5, how many times did Richard break the chocolate bar?
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Answer:
49
Step-by-step explanation:
as whole chocolate bar was 10×5= 50
and 1×1= 1 was left
so, 50-1=49
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