ChetanaSforum # Urgent urgent plz solve this apti questions

## Recommended Posts

1.A can do a work in 8 days, B can do a work in 7 days, C can do a work in 6 days .A works on the first day, B works on the second day and C on the third day resly.that is they work on alternate days. When will they finish the work.(which day will they finish the work) Ans: 7 7/168 days2.There are 40 seats in a bus. People agree to share the money for the number of seats. The total money comes to 70.37. how many seats were free.9 seats.Rs.2.273.There are 9 balls of this one is defective. Find the minimum no. of chances of finding the defective one . Ans 3times4.Two trains are traveling at 18kmph and are 60 km apart. There is fly in the train. it flies at 80kmph. It flies and hits the second train and then it starts to oscillate between the two trains. At one instance when the two trains collide it dies. Distance traveled by the fly when both trains collide is Ans.---12km5.Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimum time taken by the four to cross the bridge. ans 206.1. Given the following functions(1) f(n a b c ) = ac if n=1(2) f(n a b c) = f( n-1 a c + f( 1 a b c) + f( n-1 b a c ) if n > 1 Then what is the value f( 2 a b c ) = ?Ans: f( 2 a c b ) = ab + ac + bc.7.For the function f( 4 a b c ) the number of terms is...?Hint f( 4 a b c ) = f( 3 a c b ) + f( 1 a b c ) + f( 3 b a c ) etc.

##### Share on other sites

1. Let the total work be 1 A+B+C (1/8+ 1/7 +1/6) can do 73/168 of the total work in 3 days. 146/168 of total work in 6 dyas remaining work is 1-146/168=22/168=11/84on the 7th day, A can do 1/8 th work of the remaining work remaining work is 11/84-1/8=1/168B can do 1/7 th of the work in a daySo, He can do 1/168 work in (1/ 168)/(1/7)=7/168So total days are 6+1+7/168 = 7 7/168 days

##### Share on other sites

Thanks for providing the solution.