Symbol and Notation Questions and Answers

Q-11. If ‘when’ means ‘x’, ‘you’ means ‘÷’ ‘come’ means ‘-‘ and ‘will’ means ‘+’, then what will be the value of
“8 when 12 will 16 you 2 come 10″=?

(a) 45
(b) 94
(c) 96
(d) 112
(e) None of these

View Answer and Solution 

Answer : (b)
Solution :
When → x
You → ÷
Come → -
Will → +
8 When 12 Will 16 You 2
Come 10 =?
= 8 × 12 + 16 ÷ 2 - 10
= 96 + 8-10
= 104 - 10
= 94

Q-12. If ‘-‘ stands for ‘division’, ‘+’ for ‘multiplication’, ‘÷’ for ‘subtraction’ and ‘x’ for ‘addition then which one of the following equations is correct?

(a) 4 x 5 + 9 – 3 ÷ 4 = 15
(b) 4 x 5 x 9 + 3 ÷ 4 = 11
(c) 4 – 5 ÷ 9 x 3 – 4 = 17
(d) 4 ÷ 5+ 9 – 3 + 4 = 18

View Answer and Solution 

Answer : (a)
Solution :

4 x 5 + 9 - 3 ÷ 4 = 15
Using the proper notations in (a), we get the statement as:
4 + 5 x 9 ÷ 3 - 4 = 15
4 + 5 x 3 - 4 = 15
4 + 15 - 4 = 15
19 - 4 = 15
15=15

Q-13. If ‘+’ stands for ‘division’, ‘÷’ stands for ‘multiplication’, ‘x’ stands for ‘subtraction’ and ‘-‘ stands for ‘addition’, which one of the following is correct?
(a) 18 + 6 x 7 + 5 – 2 = 22
(b) 18 x 6 + 7 ÷ 5 – 2 = 16
(c) 18 + 6 – 7 + 5 x 2 = 20
(d) 18 + 6 ÷ 7 x 5 – 2 = 18

View Answer and Solution 

Answer : (d)
Solution :

18 + 6 ÷ 7 x 5 - 2 = 18
Using the proper notations in (d), we get the statement as:
18 ÷ 6 x 7 - 5 + 2 = 18
3 x 7 - 5 + 2 = 18
21 - 5 + 2 = 18
22 - 5 = 18
18 = 18

Q-14. If → stands for ‘addition’, ← stands for ‘subtraction’, ↑ stands for ‘division’, ↓ stands for ‘multiplication’, = stands for ‘equal to’, then which of the following alternatives is correct?

(a) 7 ← 43 ↑ 6 ↓ 1 = 4
(b) 3 ↓ 6 ↑ 2 → 3 ← 6 = 5
(c) 5 → 7 ← 3 ↑ 2 = 4
(d) 2 ↓ 5 ← 6 → 2 = 6

View Answer and Solution 

Answer : (d)
Solution :

2 ↓ 5 ← 6 → 2 = 6
Using the proper notations in (d), we get the statement as:
2 x 5 - 6 + 2 = 6
10 - 6 + 2 = 6
6 = 6

Q-15. If – means ÷ ,+ means x, ÷ means -, × means +, then which of the following equations is correct?

(a) 52 ÷ 4 + 5 x 8 – 2 = 36
(b) 43 × 7 ÷ 5 + 4 – 8 = 25
(c) 36 x 4 – 12 + 5 ÷ 3 = 420
(d) 36 – 12 × 6 ÷ 3 + 4 = 60

View Answer and Solution 

Answer : (a)
Solution :

52 ÷ 4 + 5 x 8 - 2 = 36
Using the proper notations in (a), we get the statement as:
52 - 4 x 5 + 8 ÷ 2 = 36
52 - 4 x 5 + 4 = 36
52 - 20 + 4 = 36
56 - 20 = 36
36 = 36