Question

In a group of students, 14 collect stamps, 16 collect postcards, 5 collect both but 4 collect neither. How many students are in the group

Answer 1

Answer:

14+16+5+4=39

I hope its help you.

Answer 2

Answer:

By observing the marks scored by 40 students in the test, 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