In a school, 100 and 75 students respectively appear in an examination in 2 years. 75% of them respectively

In two successive years 100 and 75 students of a school appeared at the final examination. Respectively 75% and 60% of them passed. The average rate of pass is 68(4)/(7)% b.78% c.80% d.80(1)/(2)%

In two successive years, 80 and 60 students of a school appeared at the final examination of which 60% and 80% passed respectively. The average rate of students passed (in percent) is

In an examination,30% and 35% students respectively failed in History and Geography while 27% students failed in both the subjects. If the number of students passing the examination is 248, find the total number of students who appeared in the examination.380 b.400 c.425 d.725

In an entrance examination at different centres, a total of 25, 30, 40, 45, 60 and 100 students appeared. The pass percentage of the different centres are 20%, 30%, 35% 40% 50% and 75% respectively. The pass percentage of the entrance examination is:(correct to the nearest integer) विभिन्न केंद्रों पर प्रवेश परीक्षा में कुल 25, 30, 40, 45, 60 और 100 छात्र उपस्थित हुए। विभिन्न केंद्रों का उत्तीर्णा प्रतिशत क्रमशः 20%, 30%, 35% 40% 50% और 75% है। प्रवेश परीक्षा का उत्तीर्णता प्रतिशत क्या है ज्ञात करे : (निकटतम पूर्णाक तक )

A student obtained 60, 75 and 85 marks respectively in three monthly examinations in Physics and 95 marks in the final examination. The three monthly examinations are of equal weightage whereas the final examination is weighted twice as much as a monthly examination. His average marks in Physics are (a) 78.75 (b) 79 (c) 82 (d) 85

Of the students in a school, it is known that 30% have 100% attendance and 70% students are irregular. Previous year results report that 70% of all students who have 100% attendance attain A grade and 10% irregular students attain A grade in their annual examination. At the end of the year, one student is chosen at random from the school and he was found to have an A grade. What is the probability that the student has 100% attendance ? Is regularity required only in school ? Justify your answer.