sample-question-paper-for-class-9-cbse-sa2-maths-paper-1-q20

sample question paper for class 9 cbse sa2 maths Paper 1 Q20

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00:02 CBSE sample papers for Class 9 Maths SA2 Paper 1 q20 The mean age of 20 students is 15 years. If the age of teacher is included. then mean age becomes 17 years. Find the age of the teacher.

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