Latest m4maths Aptitude Question SOLUTION: If we consider the permutation of 7 numbers then what is the order of (1457)(236)

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(#M40024586) M4MATHS question permutation Keep an EYE

If we consider the permutation of 7 numbers then what is the order of (1457)(236)

Asked In m4maths Aashu (10 years ago)

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Divya  (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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seetha  (10 years ago)

307th position
huh?

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Divya  (10 years ago)

anyone plzz explain..

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sai vaishnavi  (10 years ago)

yes divya u r rght....
here they r asked to fnd the rank....lets go through...firstly
here firstly take 1_ _ _ _ _ _ _=6!...but series starts with 1 4 ____,so the given rank is with in this range...i.e,sub division of this so,internally check for....1 2_ _ _ _ _=5!=120
.....
.....same as divya said just like dictionary order...for example
u finds 1000 words starting with a_ _ _ _......but the words with a n __ ___
is with in that 1000 only na....

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