Latest TCS Aptitude Question SOLUTION: if we consider the permutation of 7 numbersthe what is the order of (1457)(236)

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if we consider the permutation of 7 numbersthe what is the order of (1457)(236)

Asked In TCS karthik (10 years ago)

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j.s.b.subramanyam  (10 years ago)

Question is to find the order/rank of 1457236...
thus
1 2 _ _ _ _ _ =5!=120
1 3 _ _ _ _ _ =5!=120
1 4 2 _ _ _ _ =4!= 24
1 4 3 _ _ _ _ =4!= 24
1 4 5 2 _ _ _ =3!= 6
1 4 5 3 _ _ _ =3!= 6
1 4 5 6 _ _ _ =3!= 6
hence next series will be
1 4 5 7 2 3 6
Thus it is 120+120+24+24+6+6+6=306
and hence 1 4 5 7 2 3 6 will be 307th

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Srishti Mehta  (10 years ago)

Ans is 307

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kajal jaiswal  (10 years ago)

the answer is 12..

Is this solution Helpfull? Yes (4) | No (2)  

Rahul Barnwal  (10 years ago)

since orde is 1234567
now (1234)(567) in this 567 can arrange in 3! way =6 ways.
now (124)(3567) can arrange in 4! way =24 ways.
now (14235)(67) can arrange in 2! way =2 ways.
now (1425)(367) can arrange in 3! way =6 ways.
now (14523)(67) can arrange in 2! way =2 ways.
now (14527)(36) in this 36 can arrange in 2! way =2 ways.
now last is 1457236 can be considered as 1.
so orde is=6+24+2+6+2+2+1=41.

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Lakshmi  (10 years ago)

plz explain @kajal

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Srishti Mehta  (10 years ago)

Karthik can you please explain hhow the and. is coming as 12

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karthik  (10 years ago)

@rahul ans is 12...pls check once again

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Guru Pranav  (10 years ago)

307th

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