Correct Answer: + and ÷

Solution : Given:
1000 – 448 + 14 ÷ 15 × 2 = 998

Let's check the options –
First option: + and ÷
The equation becomes ⇒ 1000 – 448 ÷ 14 + 15 × 2 = 998
Solving the L.H.S. of the equation –
= 1000 – 448 ÷ 14 + 15 × 2
= 1000 – 32 + 30
= 998
Second option: × and ÷
The equation becomes ⇒ 1000 – 448 + 14 × 15 ÷ 2 = 998
Solving the L.H.S. of the equation –
= 1000 – 448 + 14 × 15 ÷ 2
= 1000 – 448 + 14 × 7.5
= 1000 – 448 + 105
= 657 ≠ 998
Third option: – and +
The equation becomes ⇒ 1000 + 448 – 14 ÷ 15 × 2 = 998
Solving the L.H.S. of the equation –
= 1000 + 448 – 14 ÷ 15 × 2
= 1000 + 448 – 0.93 × 2
= 1000 + 448 – 1.87
= 1446.13 ≠ 998
Fourth option: ÷ and –
The equation becomes ⇒ 1000 ÷ 448 + 14 – 15 × 2 = 998
Solving the L.H.S. of the equation –
= 1000 ÷ 448 + 14 – 15 × 2
= 2.23 + 14 – 30
= –13.77 ≠ 998

So, only the first option satisfies the equation. Hence, the first option is correct.