Simplification and approximation
Top questions
See all →- Simplify: \(\frac{3}{4}\) of \(\frac{8}{9}\) of 405 + 25% of 240 Answer: A. 330 Answer: (A) 330 3/4 × 8/9 × 405 = 2/3 × 405 = 270 . 25% of 240 = 60. Total = 330 . 1
- Find the value of \(\frac{0.6 \times 0.6 \times 0.6 + 0.4 \times 0.4 \times 0.4}{0.6 \times 0.6 - 0.6 \times 0.4 + 0.4 \times 0.4}\). Answer: C. 1 Answer: (C) 1 Use a³ + b³/a² - ab + b² = a + b . With a = 0.6, b = 0.4 : value = 0.6 + 0.4 = 1 . 1
- Simplify: \(48 \div 4 \times 3 - 5^2 + 7 \times 6 \div 2\) Answer: A. 32 Answer: (A) 32 BODMAS: 5² = 25 . 48 ÷ 4 × 3 = 12 × 3 = 36 . 7 × 6 ÷ 2 = 21 . So 36 - 25 + 21 = 32 . 1
- Find the value of \(\sqrt{2116} + \sqrt[3]{3375} - \sqrt{961}\). Answer: B. 30 Answer: (B) 30 √(2116) = 46 , sqrt[3]3375 = 15 , √(961) = 31 . So 46 + 15 - 31 = 30 . 1
- What will come in place of the question mark (?)?\( 45\% \text{ of } 860 - 12^2 + 17 \times 8 = ? \) Answer: C. 379 Answer: (C) 379 387 - 144 + 136 = 379 . 1
- What will come in place of the question mark (?)?\( ? \div 16 \times 4.5 = 27 \times 3 \) Answer: C. 288 Answer: (C) 288 ? = 81 × 16/4.5 = 288 . 1