Page 236 - Maths Skills - 8

234 Maths

5. 6. (i) Class size - 10 (ii) 250 (iii) 10 – 20
(iv) (a) 160 magazines (b) 30 magazines
(c) 90 magazines (d) 190 magazines

Exercise - 12.3
1., 2., 3., 4., 5. Do it yourself. 6. (i) 450 (ii) Classical
(iii) Classical – 200, Semi-classical – 400, Folk – 600, Light – 800

Exercise - 12.4

1. (i) 1 (ii) 1 (iii) 1 2. (i) 1 (ii) 1 (iii) 1 (iv) 1
2 4 4 2 2 3 2

3. (i) 1 (ii) 3 (iii) 1 (iv) 1 (v) 15
4 8 4 16 16

[Sample space 2 = 16]
4

4. (i) 1 (ii) 11 (iii) 13
5 30 30

5. (i) 1 (ii) 1 (iii) 1 [Sample space 2 = 32]
5
9 36 12
6. (i) 7 (ii) 9
16 16
7. (i) 1 (ii) 13 (iii) 1
2 16 32
(iv) 31 (v) 5
32 16
Assessment Time

A. 1. (iv) 2. (iii) 3. (ii) 4. (iv) 5. (ii) 6. (i) 7. (iii) 8. (iii)
9. (ii) 10. (iii) B. 1. Range 2. Class Interval 3. Class Size 4. Class mark 5. ||||
6. one 7. an event 8. sample space 9. No. of favourable outcomes to E 10. zero C. 1. T 2. F 3. F
S
4. T 5. T 6. T 7. F 8. F 9. F 10. T D. 1. (iii) 2. (i) 3. (i)
4. (iii) E. 1. (b) 2. (b) F. 1. Do it yourself. 2. 1 3. (i) 3 (ii) 5 (iii) 3 (iv) 0
50 7 14 14
4. (i) 1 (ii) 1 (iii) 1 (iv) 1 G. Do yourself
2 2 3 2