Correct Answer - Option 3 : 8 and 12
By checking the options :
1) × and +
Given equation : (56 ÷ 7) + 5 × 8 – 12 = 60
After interchanging the position of the symbol as given in the option.
(56 ÷ 7) × 5 + 8 – 12 = 60
8 × 5 + 8 - 12 = 60
40 + 8 - 12 = 60
48 - 12 = 60
36 ≠ 60
2) + and ÷
Given equation : (56 ÷ 7) + 5 × 8 – 12 = 60
After interchanging the position of the symbol as given in the option.
(56 + 7) ÷ 5 × 8 – 12 = 60
63 ÷ 5 × 8 - 12 = 60
12.6 × 8 - 12 = 60
100.8 - 12 = 60
88.8 ≠ 60
3) 8 and 12
Given equation : (56 ÷ 7) + 5 × 8 – 12 = 60
After interchanging the position of the symbol as given in the option.
(56 ÷ 7) + 5 × 12 – 8 = 60
8 + 5 × 12 - 8 = 60
8 + 60 - 8 = 60
68 - 8 = 60
60 = 60
4) 7 and 5
Given equation : (56 ÷ 7) + 5 × 8 – 12 = 60
After interchanging the position of the symbol as given in the option.
(56 ÷ 5) + 7 × 8 – 12 = 60
11.2 + 7 × 8 – 12 = 60
11.2 + 56 - 12 = 60
67.2 -12 = 60
55.2 ≠ 60
Hence,'8 and 12' is the correct answer.