There is no number that can multiplied by 0 to get 1.
The equation 0x = 1 has no solution bcause 0x = 0 whatever number x
may be.
You might think that 1/0 times 0 would equal 1 but 1/0 is not a number.
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0 and 1. 1x1 = 1. The answer is itself!
Any number will be a rational number when multiplied.0 multiplied by any real number is rational and so it will produce a rational number when multiplied.If x is any non-zero number (rational or not), then since it is non-zero, 1/x is defined and x*(1/x) = 1 which is rational. So any non-zero number will produce a rational number when multiplied.Thus any number will produce a rational number when multiplied.
The product would be 1, unless the number is zero in which case there is no solution because no number can be multiplied by zero and equal 1.
Anything multiplied by zero is zero - no matter how complex the sum !
1 multiplied by 40 equals 40.