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In a class of 20 students in an examination in Mathematics 2 students scored 100 Marks each, 3 get zero each and the average of the rest was 40.

What is the average Of the whole class?

(2*100)+(3*0)+15*40=800/20=40 Ans:Avg of whole class is 40

(2x100)+(3x0)+(15x40) =800 800/20=40 ans

2 students get 100 marks, then 2* 100 = 200 3 students get 0 marks , then 3* 0 = 0 15 students get 40 (average) marks, then 15 * 40 = 600 Solution : (200 + 0 + 600) / 20 = 40

In a class consisting of 100 students 20 know English and 20 do not know Hindi and 10 know neither English nor Hindi. How many students know both Hindi and English?

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Four students are comparing their test marks.

York scored higher marks than Amber but lower than Nelly.

Max scored higher marks than Nelly.

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