Top 100 questions

The mean marks obtained by 300 students in a subject are 60. The mean of top 100 students was found to be 80 and the mean of last 100 students was found to be 50. The mean marks of the remaining 100 students are

What will come in place of question mark (?) in the following questions ? (10 xx ?)/(11)((121 + 110 + 100)/(121)) = 16550

What will come in the place of the question mark ‘?’ in the following question? 10% of 100 div 5 = (?)^2 ÷ 72

Reach For The Top - Santosh Yadav (Textbook Questions)|Reach For The Top - Maria Sharapova (Textbook Questions)|Summary

Reach For The Top - Santosh Yadav (Textbook Questions)|Reach For The Top - Maria Sharapova (Textbook Questions)|Summary

The mean marks got by 300 students in the subject of statistics was 45. The mean of the top 100 of them was found to be 70 and the mean of the last 100 was known to be 20, then the mean of the remaining 100 students is