📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      The sum of five consecutive even numbers is 30.

      What is the sum of the squares of these numbers?
      A 200 Correct Answer Incorrect Answer
      B 220 Correct Answer Incorrect Answer
      C 250 Correct Answer Incorrect Answer
      D 280 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let the first number be x. [if gte msEquation 12]>∴ [if !msEquation]--> [endif]-->`:.` x + x + 2 + x + 4 + x + 6 + x+ 8 = 30 ⇒ 5x + 20 = 30 ⇒ 5x = 30 – 20 ⇒ 5x = 10 [if gte msEquation 12]>∴ [if !msEquation]--> [endif]--> x = 2 Sum of the squares of the numbers = 2² + 4² + 6² + 8² + 10²= 220

      Practice Next
      More No. System Questions

      Relevant for Exams:

      ask-question