1. If ‘–’ stands for ‘division’, ‘+’ for ‘multiplication’, ‘÷’ for ‘subtraction’ and ‘×’ for ‘addition’, then which one of the following equations is correct?
(a) 4 × 5 + 9 – 3 ÷ 4 = 15
(b) 4 × 5 × 9 + 3 ÷ 4 = 11
(c) 4 – 5 ÷ 9 × 3 – 4 = 17
(d) 4 ÷ 5 + 9 – 3 + 4 =18

2. If ‘–’ stands for ‘division’, ‘+’ for ‘multiplication’, ‘—’ for ‘subtraction’ and ‘×’ for ‘addition’. Which one of the following equation s is correct?
(a) 6 + 20 – 12 ÷ 7 – 1 = 38
(b) 6 – 20 + 12 ÷ 7 + 1 = 57
(c) 6 + 20 – 12 ÷ 7 × 1=62
(d) 6 ÷ 20 × 12 + 7 – 1 = 70

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

4. If ‘×’ stands for ‘addition’, ‘<’ for ‘subtraction’, ‘+’ for ‘division’, ‘>’ for ‘multiplication’ ‘–’ for ‘equal  to’, ‘–’ for ‘greater than’ and ‘=’ for ‘less than’, then state which of the following is true?
(a) 3 × 4 > 2 – 9 + 3 < 3
(b) 5 × 3 < 7 ÷ 8 + 4 × 1
(c) 5 > 2 + 2 = 10 < 4 × 8
(d) 3 × 2 < 4 ÷ 16 > 2 + 4

5. If ‘+’ stands for ‘greater than’, ‘×’ stands for ‘addition’, ‘+’ stands for ‘division’,‘–’ stands for ‘equal to’, ‘>’ stands for ,multiplication’’=’ stands for ‘less than’ and’,’ stands for ‘minus’ then which of the following alternatives is correct?
(a) 5 > 2 < 1 – 3 × 4 × 1
(b) 5 < 2 × 1 + 3 > 4 × 1
(c) 5 > 2 × 1 – 3 > 4 < 1
(d) 5 + 2 × 1 = 3 + 4 > 1

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