Question:The average of Kanchan,s marks in `7` subjects is `75`.His average in six subject excluding Seciene is `72`.How many marks did he get in Seciene ?
A `72`
B `90`
C `93`
D None of these
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+ Answer
C
+ ExplanationMarks in Seciene
`= (7 xx 75 - 6 xx 72)`
`= 93`