In a Class X Board examination- ten papers are distributed over five Groups of PCB- Mathematics- Social Science- Vernacular and English- Each of the ten papers is evaluated out of 100 - The final score of a student is calculated in the following manner- First the Group Scores are obtained by averaging marksin the papers within the Group- The final score is the simple average of the Group Scores- The data for the top ten students are presented below- Dipan-s score in English Paper II has been intentionally removed in the table- 2-c- PCB Group 2- Maths 2-c- Social Science Group 2-c- Vernacular Group 2-c- English Group 2- Final Score Name of students Phy Chem Bio Group His Geo Paper Paper II Paper I Paper II Anita G 98 96 97 98 95 93 94 96 96 98 96-2 Rohan B 97 99 95 97 95 96 94 94 96 98 96-1 DeepakB 98 98 98 95 96 95 96 94 96 - - 96-0 Sachin B 97 98 99 96 96 98 94 97 92 94 95-9 Sunny B 95 96 97 98 97 96 92 93 95 96 95-7 Swati G 96 89 85 100 97 98 94 95 96 95 95-5 John B 90 94 98 100 94 97 90 92 94 95 95-0 Anil B 96 99 96 99 95 96 82 93 92 93 94-3 Prakash B 98 98 95 98 83 95 90 93 94 94 93-9 Tina G 96 98 79 99 85 94 92 91 87 96 93-7 Note- B or G against the name of a student respectively indicates whether the student is a boy or a girl- Among the top ten students- how many boys scored at least 95 in at least one paper from each of the groups-

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In a Class X ...

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In a Class X Board examination, ten papers are distributed over five Groups of PCB, Mathematics, Social Science, Vernacular and English. Each of the ten papers is evaluated out of 100. The final score of a student is calculated in the following manner. First the Group Scores are obtained by averaging marks in the papers within the Group. The final score is the simple average of the Group Scores. The data for the top ten students are presented below. (Dipan’s score in English Paper II has been intentionally removed in the table).

Note: B or G against the name of a student respectively indicates whether the student is a boy or a girl.
Among the top ten students, how many boys scored at least 95 in at least one paper from each of the groups?

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Solution

The correct option is A 1
Option (A) is the correct answer. Check the video for the approach.

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Q. In a Class X Board examination, ten papers are distributed over five Groups of PCB, Mathematics, Social Science, Vernacular and English. Each of the ten papers is evaluated out of 100. The final score of a student is calculated in the following manner. First the Group Scores are obtained by averaging marks in the papers within the Group. The final score is the simple average of the Group Scores. The data for the top ten students are presented below. (Dipan’s score in English Paper II has been intentionally removed in the table).

Note: B or G against the name of a student respectively indicates whether the student is a boy or a girl.

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Q. Mark obtained by Insuvai in Mathematics in ten unit tests are listed below:

Unit Test	$I$	$I I$	$I I I$	$I V$	$V$	$V I$	$V I I$	$V I I I$	$I X$	$X$
Marks obtained (%)	$89$	$93$	$98$	$99$	$98$	$97$	$96$	$90$	$98$	$99$

Based on this data find the probability that in a unit test Insuvai get more than

95

100^{2} - 99^{2} + 98^{2} - 97^{2} + 96^{2} + 95^{2} + . . . . = S

find

S = ?

A car travels a distance of 30 km out of the total distance of 500 km. Find the percentage of distance left.

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The correct option is A 1Option (A) is the correct answer. Check the video for the approach.

The correct option is A 1
Option (A) is the correct answer. Check the video for the approach.