aliensbrain
  • Home
  • Study
  • Quizzes
  • 🎤AI Practicefree
  • Notebooks
  • Community
  • Sign in
Multiple choice

Find the approximate value of the following: (21 + 3.9 \times 2.9 + 8.99 = ?)

  1. 39

  2. 42

  3. 38

  4. 40

  5. 50

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Simplify: 21 + 3.9×2.9 + 8.99 ≈ 21 + 4×3 + 9 = 21 + 12 + 9 = 42. Option B (42) is correct. The calculation rounds each term for easier computation.

Keep practicing — related questions

  • If α, β, γ are roots of the equation x3 - 3x2 + 3x + 7 = 0 (and ω is imaginary cube root of unity), then fi...
  • Which of the following statements is/are correct? 1. The production of food grains has witnessed an increas...
  • Read the following facts. 1. He ascended the throne as in 1719. 2. Sayyid brothers were soon killed by him....
  • Match the following items given ||| |---|---| |Column-I|Column-II| |1. Parasitism|A. Advantageous for both ...
  • The Annual Survey of Industries is conducted under the statutory provisions of the Collection of Statistics...
  • Consider the following statements: 1. Sunspots always appear in pairs. 2. Mars takes more time to complete ...
  • Which of the following statements is/are incorrect? 1. Article 21 declares that no citizen can be denied hi...
  • Which of the following factors would determine the critical mass of a fissile substance? 1. Density 2. Enri...

Practice this chapter

  • Simplification and Approximation (647 questions)
Advertisement
© Aliensbrain | all rights reserved
  • About
  • Contact
  • Terms and Condition
  • Privacy Policy