19 February 2014: 11+ ARITHMETIC

Today sees a 3-part number challenge similar to the ELEVEN PLUS questions 11 year-olds in the UK sat as part of the entry procedure for Grammar Schools many years ago!

  1. Three times a certain number is 107 more than 343. What is that number?
  2. 565 is the correct answer when three numbers are added up; one of them is 89, the other is 286. What is the third number?
  3. One number in the line  1  9  16  23  27  31  34  36  doesn’t fit properly. Which is it?   

Leave your answers below or e-mail me at paul@7puzzle.com.

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3 Responses to 19 February 2014: 11+ ARITHMETIC

  1. LJ says:

    1. 150
    2. 190
    2. 23 should be 22 as the patterns goes up by 8, 7, (then should be) 6, 5, 4, 3, 2

  2. Vrinda says:

    1) The answer is 150.
    Explanation: I got 150 as my answer because the question said that it is a 107 more 343 so I added them two up which makes 450 and then divided it by three which took me to the answer.
    2) I got the answer as 190
    Explanation: I got 190 because 286 + 89 = 375 , and then I subtracted 375 from 565 and I got 190 which gives me my third number.
    3) 23
    Explanation: It should be 23 because the sequence goes up in +8 then +7 and then it goes +7 again.

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