guys solve this maths question in detail plz answer this in detail
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1. Lowest - 23 highest - 54
2. Range is difference of highest and lowest mark i.e 54-23 = 31
3. Mean is addition of all marks and then divide by the count i.e 40+38+23÷33+32+41+54+28+26+35 = 340÷2 = 170
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