please help?

when you are doing probability and you get a problem where you have to multiply, do you cross multiply like in regular fractions or multiply straight across? and what happens when you have three fractions? for example:

73/100 * 82/100= 5986/10000

or

73/100 * 82/100= 7300/8200

and 73/100 * 82/100 * 1/2 = ?

4 Answers

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  • 1 decade ago
    Favorite Answer

    any operation in maths is performed in the same way irrespective of where it is performed.

    for your question, consider this example -

    a/b * c/d * e/f * ....................y/z

    =(a*c*e*.....................y ) ( b*d*f.............................. z)

    so, your solution is 5896/10000 to the first one and 5896/20000 to the second.

    p.s.looks like you asked this ques coz you are not getting the ans . maybe you've solved the sum the wrong way, or made some calculation mistake.check again.

  • Yaakov
    Lv 6
    1 decade ago

    I don't know anything about statistics or probabilities, but when you are just multiplying fractions you always multiply straight across.

  • Anonymous
    1 decade ago

    it is 5986/10000 or 59.86% and the other one 5986/20000 or 29.93 %

  • 1 decade ago

    I find cheating really helpful

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