What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.) (5.192 × 8.13 − √2499.82) ÷ 9.97 + ? × 9.11 ≈ 78.17

Which of the following is the closest approximation to the product of 0.2222 × 0.16 × 0.399 × 0.115 × 20?

What approximate value should come in place of the question mark (?) in the following expression? (Note: You are not expected to calculate the exact value.)3199.98 ÷ 79.99 × 45.02 = ? + 124.97