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Maths Puzzle
Numerical Ability
transform the product of (2-i)(-7-3i) to the standard form.
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how do you do
6-/4y+10/ when y=5
A crew of 6 men can complete the construction of an office in 60 days. In order to speed up the job the contractor increases the size of the crew by 1/3. How many days will he save by the addition of these men?