following is the marks of 8 students. find out arithmetic mean by shortcut method and step 30,45,60,45,15,65,85,20
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Answer:
sddssszd. ghcf. nhc. jb. bjv bjvc jb. mmh. b jb . bb nnbb .m
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1
Explanation:
(30+45+60+45+15+65+85+20)/8
=360/8
=45
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