निम्नलिखित समीकरण में प्रश्न चिन्ह (?) के स्थान पर लगभग क्या मान आएगा? (आपसे सटीक मान की गणना करने की अपेक्षा नहीं की जाती है।)15.98 × 74.02 + 39.97 × 11.04 = ?

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.)24.89% of ? + 75.15% of 399.78 = 16 of 2499.68%

What approximate value will come in place of the question mark (?) in the following question? (13.13)2 + (15.89)2 - (12.12)2 ÷ 9.09 = ?