• Placement Papers
• /
• Infosys
• /
• Numerical Ability
• /
• LCM and HCF

Infosys Question Papers: Infosys Interview Experience(10) INFOSYS Company Profile

(#M40031907) INFOSYS Numerical Ability question probablity Keep an EYE

Q.There are 7 man and 5 women sitting in a circle, find the all possible way so that two women wont sit together?

Asked In Infosys chhatresh patel (11 years ago)

Solved chhatresh patel Read Solution (3)

Is this Puzzle helpful?   (21)   (5) Submit Your Solution LCM and HCF

Read Solution (3) :

chhatresh patel  (11 years ago)

7 men can sit in a circle in (7-1)!= 6! ways
no two women sit together,so woman have to sit alternate to men
there will be 7 places,in which 5 women have to sit
so women can sit in 7 places as 7P5 ways
reqd ways= 6!*7P5

Read more: http://www.m4maths.com/placement-puzzles.php?SOURCE=Infosys#ixzz2qkItby86
Follow us: m4maths on Facebook

Is this solution Helpfull? Yes (21) | No (1)  

DHAKAD NEETENDRA SINGH  (11 years ago)

7 man can sit in circle in (7-1)! ways
there are 7 places between 7 man
we have to sit 5 women in between them
no of ways selecting the 5 places out of 7 places = 7c5
no of arrangement for women= 7c5*5!
now,
total no of arrangement= 7c5*5!*(7-1)!
= 7c5*5!*6!
= 7p5*6!

Is this solution Helpfull? Yes (11) | No   

Rijul Tripathy  (10 years ago)

In a round table, 7 men can sit in 6! ways because a round table has no start and end points, so 1_2_3_4_5_6_7_ is similar to 7_1_2_3_4_5_6_.
Now there are 7 empty spaces that can be filled by 5 women...so as this is a process of arrangement we use permutation, so its 7P5

So 6! * 7P5

Is this solution Helpfull? Yes (1) | No   

Please Login to Read Solution.