1 thought on “11. Number of students of a class who can sing, swim, and draw/paint:<br />Sing<br />Swim<br />Dance<br />Draw/paint<br />15<br />”
Answer:
we can construct the table as follows.
Mark
Tally mark
Number of Students
1
||
2
2
|||
3
3
|||
3
4
||
7
5
|
6
6
||
7
7
5
8
||||
4
9
|||
3
(a) The students who obtained their marks equal to or more than 7 are the students who obtained their marks as either of 7, 8, and 9. Hence, number of these students = 5 + 4 + 3 = 12
(b) The students who obtained their marks below 4 are the students who obtained their marks as either of 1, 2, and 3.
Answer:
we can construct the table as follows.
Mark
Tally mark
Number of Students
1
||
2
2
|||
3
3
|||
3
4
||
7
5
|
6
6
||
7
7
5
8
||||
4
9
|||
3
(a) The students who obtained their marks equal to or more than 7 are the students who obtained their marks as either of 7, 8, and 9. Hence, number of these students = 5 + 4 + 3 = 12
(b) The students who obtained their marks below 4 are the students who obtained their marks as either of 1, 2, and 3.
Hence, number of these students = 2 + 3 + 3 = 8