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    #1

    What number is 30 less than when multiplied by 6 times itself?

    I came across an IQ question - the title.

    The answer is 6.

    Doesn't 'when multiplied by 6 times itself' means 'a x a x a x a x a x a'?

    multiply the number by '6 times itself' ?

    I don't quite understand what 'times' is doing here. It would be much clearer if it's 'when multiplied by 6 itself'.

    Thanks

  1. Raymott's Avatar
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    #2

    Re: What number is 30 less than when multiplied by 6 times itself?

    I agree. I don't think it makes sense.
    30 is less than 6 x 6 (36). But I can't see how the question is asking that.

  2. BobK's Avatar
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    #3

    Re: What number is 30 less than when multiplied by 6 times itself?

    The 'writer' (in the loosest possible sense - bozo with a spell-checker) has tried to be concise by stripping out repetition essential to the meaning:
    What number is 30 less than its own value when it is multiplied six times by itself - which is pretty poorly expressed but does at least make sense. As a general case, there is no number that is less than itself!

    Perhaps disentangling this tortured meaning is part of the test...?

    (But I don't think Raymott meant he was agreeing with your last sentence. )

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  3. Raymott's Avatar
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    #4

    Re: What number is 30 less than when multiplied by 6 times itself?

    No, I was agreeing that it's nonsense.

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    #5

    Re: What number is 30 less than when multiplied by 6 times itself?

    It's really difficult to express some (even simple) maths ideas in words. But even so, in BrE at least, we could use the word times to describe multiply- as well as the word multiply in the same phrase but that would make it rather clumsy.
    multiply by 6
    multiply 6 times
    times by 6-
    all of those would be understood.

    School children would understand the meaning "times it by" 6. So times gets used even without the word multiply!
    In the original I think would just have left out times itself.

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