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Option 2 : + and ÷
Changing symbols as per the given options,
1) + and
Given statement : 12 × 4 + 2 ÷ 3 – 3
On interchanging the above signs,
12 × 4 - 2 ÷ 3 + 3
= 12 × 4 - 0.67 + 3
= 48 - 0.67 + 3
= 51 - 0.67
= 50.33 ≠ 24
2) + and ÷
Given statement : 12 × 4 + 2 ÷ 3 – 3
On interchanging the above signs,
12 × 4 ÷ 2 + 3 – 3
= 12 × 2 + 3 - 3
= 24 + 3 - 3
= 27 - 3
= 24
3) × and +
Given statement : 12 × 4 + 2 ÷ 3 – 3
On interchanging the above signs,
12 + 4 × 2 ÷ 3 – 3
= 12 + 4 × 0.67 3
= 12 + 2.68 - 3
= 14.68 - 3
= 11.68 ≠ 24
4) × and -
Given statement : 12 × 4 + 2 ÷ 3 – 3
On interchanging the above signs,
12 - 4 + 2 ÷ 3 × 3
= 12 - 4 + 0.67 × 3
= 12 - 4 + 2.01
= 14.01 - 4
= 10.01 ≠ 24
Hence, ‘ + and ÷’ is the correct answer.
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