TCS Company Numerical Ability Alligation or Mixture

A, E, F, and G ran a race.
A said “I did not finish 1st /4th
E said “I did not finish 4th”
F said “I finished 1st”
G said “I finished 4th”
If there were no ties and exactly 3 children told the truth, when who finishes 4th?

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TCS Other Question

37. An engineer undertakes a project to build a road 15 km long in 300 days and employs 45 men for the purpose. After 100 days, he finds only 2.5 km of the road has been completed. Find the (approx.) number of extra men he must employ to finish the work in time. (6^1001+7^1001)/17
find the reminder