Latest TCS Aptitude Question SOLUTION: A mother with 7 children takes three at a time to a cinema. She goes with every group of three that she with distinct can form. How many times can she go to the cinema with distinc

• Placement Papers
• /
• TCS
• /
• Numerical Ability
• /
• Permutation and Combination

TCS Question Papers: TCS Interview Experience(90) TCS Company Profile

(#M40155359) TCS Numerical Ability question Keep an EYE

A mother with 7 children takes three at a time to a cinema. She goes with every group of three that she with distinct can form. How many times can she go to the cinema with distinct groups of three children. How many times an individual child will go to cinema before the group is repeated.

Asked In TCS pramit (8 years ago)

Unsolved Read Solution (5)

Is this Puzzle helpful?   (11)   (5) Submit Your Solution Permutation and Combination

Read Solution (5) :

milan jena  (8 years ago)

7C3=35 ways mother can go to cinema with distinct groups of three children
6C2=15 times a individual child will go to cinema before the group is repeated.
so total 35 and each number is repeating 15 times.

Is this solution Helpfull? Yes (16) | No   

pramit  (8 years ago)

for first part it is 7C3 ways=35
for second part we have selected one child.so remaining 2 out of 6 can de done in 6c2 ways=15 ways

Is this solution Helpfull? Yes (6) | No (1)  

ravi kumar  (8 years ago)

There are (7c3)=35 different groups of three that can be formed. Realizing all of them means 35. 35 trips to the cinema, or 35⋅3=105 children's tickets. Since there are 7 children each of them has visited the cinema 105/7=15=(6c2)) times, namely with every pair of his 6 siblings

Is this solution Helpfull? Yes (5) | No   

K  (8 years ago)

http://math.stackexchange.com/questions/1412705/the-number-of-times-will-an-individual-child-goes-to-the-cinema-before-a-group-i

Is this solution Helpfull? Yes | No   

prashanth  (8 years ago)

It's fourteen

Is this solution Helpfull? Yes | No (1)  

Please Login to Read Solution.