Question

The traffic department wants to decide whether they should put up a signal at a cross or not. Which of these would be the BEST way to decide this?


check whether a crossroad nearest to it has a signal or not.
ask the people crossing the road whether they need a signal or not.
find out if there are footpaths on the roads near the crossroad or not.
observe the vehicle traffic in all direction at the cross road for few days.

Answer 1

plssss help

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ansr is - a^x-z . b^y-x . c^z-y

Answer 2

(ab)^y-z . (bc)^z-x . (ca)^x-y

ansr is - a^x-z . b^y-x . c^z-y