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#30542
Preeti Pathak
Participant

Hello,

Thank you.

In this case ,for  using “one more than the one before ” ,34 will have to be written as 39-5.

31  *   34

34=(39-5),will give

31 * (39-5)=(31 *39) -(31*5)

=1209-155

= 1054

Is this the way(explained above) ,we can do ?( “proportionately is not used here)

For using proportionately,

if we halve 34, will get 17 .If we double ,will get 68. can’t find 17 * 31 or 68*31.(using proportionately)

similarly,doubling 31 will give 62.Can’t find 62 * 34(using proportionately).

Please explain how it can be done “using proportionately”?

 

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