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mathmath333

  • one year ago

Reasoning question

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  1. mathmath333
    • one year ago
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    \(\large \color{black}{\begin{align} & \normalsize \text{Fill in the blanks }\hspace{.33em}\\~\\ & 80:90::120:?\hspace{.33em}\\~\\ & a.)\ 143 \hspace{.33em}\\~\\ & b.)\ 156 \hspace{.33em}\\~\\ & c.)\ 169 \hspace{.33em}\\~\\ & d.)\ 136 \hspace{.33em}\\~\\ \end{align}}\)

  2. ParthKohli
    • one year ago
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    Bhai are you sure you're in 11th grade?

  3. mathmath333
    • one year ago
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    ??

  4. imqwerty
    • one year ago
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    Mathmath u kiddin rn

  5. ParthKohli
    • one year ago
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    \[\frac{80}{90} = \frac{120}{?}\]

  6. mathmath333
    • one year ago
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    is this 10th grade question

  7. ParthKohli
    • one year ago
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    I normally encountered these in 6th/7th grade.

  8. mathmath333
    • one year ago
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    i should mention that this reasoning type question doesn't necessarily involves math

  9. ParthKohli
    • one year ago
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    Yeah, I mean sure, you don't have to make an equation and solve it. This is as verbal as I can get about the question... 80:90 is the same as 8:9. Now 15*8 = 120 so the question mark should be replaced by 15*9.

  10. welshfella
    • one year ago
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    i've never see the symbol :: before?

  11. mathmath333
    • one year ago
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    but now u have seen

  12. ParthKohli
    • one year ago
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    Uh, I read it as "equivalent to" or "corresponds to" or "same as" or whatever.

  13. welshfella
    • one year ago
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    yes lol - but what does it mean?

  14. ParthKohli
    • one year ago
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    Are you sure the options are correct, mathmath?

  15. mathmath333
    • one year ago
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    it is used in reasoning /IQ type questions , where u have to find the pattern it may be more complex

  16. mathmath333
    • one year ago
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    and \(80/90=120/x\), \(x= 135\) is not in options

  17. mathmath333
    • one year ago
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    by doing some operation on 80, it is converted to 90 by applying the same operation on 120 u have to find the resulting number

  18. mathmath333
    • one year ago
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    \(\large \color{black}{\begin{align} & \normalsize \text{Fill in the blanks }\hspace{.33em}\\~\\ & 80:90::120:?\hspace{.33em}\\~\\ & a.)\ 143 \hspace{.33em}\\~\\ & b.)\ 156 \hspace{.33em}\\~\\ & c.)\ 169 \hspace{.33em}\\~\\ & d.)\ 181 \hspace{.33em}\\~\\ \end{align}}\) last option correct

  19. mathmath333
    • one year ago
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    *corrected

  20. ganeshie8
    • one year ago
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    interesting, so this is not a simple proportion

  21. mathmath333
    • one year ago
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    wait got one more correction

  22. mathmath333
    • one year ago
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    \(\large \color{black}{\begin{align} & \normalsize \text{Fill in the blanks }\hspace{.33em}\\~\\ & 80:99::120:?\hspace{.33em}\\~\\ & a.)\ 143 \hspace{.33em}\\~\\ & b.)\ 156 \hspace{.33em}\\~\\ & c.)\ 169 \hspace{.33em}\\~\\ & d.)\ 181 \hspace{.33em}\\~\\ \end{align}}\)

  23. mathmath333
    • one year ago
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    this is full correct

  24. mathstudent55
    • one year ago
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    8 * 10 9 * 11 12 * 10 13 * 11 = 143 143 = 11 * 13 156 = 12 * 13 169 = 13 * 13 181 = prime

  25. mathstudent55
    • one year ago
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    143

  26. mathmath333
    • one year ago
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    181 is the answer, wow

  27. mathstudent55
    • one year ago
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    How?

  28. mathstudent55
    • one year ago
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    I thought the answer was 143.

  29. mathmath333
    • one year ago
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    because all the others are composite

  30. ganeshie8
    • one year ago
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    we're not doing "odd man out" here ;p

  31. mathmath333
    • one year ago
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    i mean by pattern he got 143 = 11 * 13 156 = 12 * 13 169 = 13 * 13 except 181

  32. mathstudent55
    • one year ago
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    Since 80, 90, and 120 are not prime, why would we think the last number should be prime?

  33. mathmath333
    • one year ago
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    oh i see

  34. mathstudent55
    • one year ago
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    Then I was able to fit 143 as a continuation of the pattern, but not 181.

  35. mathstudent55
    • one year ago
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    \(\large 80:99 :: 120:143\) \(\large 8 \times 10:9 \times 11 :: 12 \times 10: 13 \times 11\) \(\large 80:99 :: 120: 143\)

  36. amilapsn
    • one year ago
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    I think we can propose legit reasons for each other options to be the answers although 143 is more apparent one...

  37. amilapsn
    • one year ago
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    For example finding a \(k\) and \(l \) such that \[80k+l=90\\120k+l=any \ option\ \]

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