Latest Book Aptitude Question SOLUTION: There are 6 tasks and 6 persons. Task 1 cannot be assigned either to person 1 or to person 2; task 2 must be assigned to either person 3 or person 4. Every person is to be assigned

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(#M40020028) BOOK question Keep an EYE

There are 6 tasks and 6 persons. Task 1 cannot be assigned either to person 1 or to person 2; task 2 must be assigned to either person 3 or person 4. Every person is to be assigned one task. In how many ways can the assignment be done?

Asked In Book Alok Kumar (10 years ago)

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rahul jha  (10 years ago)

answer:144
let task are t1,t2,t3,t4,t5,t6
person :p1,p2,p3,p4,p5,p6
t1:p3orp4,p5,p6=3 ways
t2=p3orp4=2 ways
t3=rest 4 ways
t4=3 ways,t5=2 ways,t6=1 ways
so required ways=3*2*4*3*2*1=144

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MADHUSUDHAN K S  (10 years ago)

144 ways assignment be done.

Task 2 can be given to two persons only(3 and 4).
So, Number of ways = 2 ways

First task can be done 3 persons.
So, Number of ways = 3 ways.

And other tasks can be done in 4 persons.
So, numbers of ways = 4*3*2*1 = 24 ways

Now, total number of ways = 2*3*24 = 144ways

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