Latest TCS Aptitude Question SOLUTION: You have to form a 6 digit even number with numbers from 1 to 7, the digit second to last should be even.

• Placement Papers
• /
• TCS
• /
• Numerical Ability
• /
• Number System

TCS Question Papers: TCS Interview Experience(91) TCS Company Profile

(#M40038958) TCS Numerical Ability question Permutation and Combination Keep an EYE

You have to form a 6 digit even number with numbers from 1 to 7, the digit second to last should be even.

Asked In TCS bans (10 years ago)

Unsolved Read Solution (12)

Is this Puzzle helpful?   (2)   (3) Submit Your Solution Number System

Read Solution (12) :

karthikeyank  (10 years ago)

ANS IS:720
1 2 3 4 5 6 7
- - - - - - -
3C2*2! WILL FILL THE LAST 2 DIGITS
REMAINING PLACES: 5C4*4!
WE HAVE (5C4*4!)*(3C2*2!) =720

Is this solution Helpfull? Yes (16) | No   

bhuvana  (10 years ago)

digit to be even last digit has 3 chances ie:2 or 4 or 6
digit 2nd to last should be also even so after filling last digit , this must have 2 chances.
then first place will posses: 5 chances
then second place will posses: 4 chances
then third place will posses: 3 chances
then next place will posses:2 chances
finally product of chances are 5*4*3*2*2*3=720

Is this solution Helpfull? Yes (11) | No   

Swayanti Bhaumik  (10 years ago)

If repetition is allowed then 7*7*7*7*3*3 @ santosh

Is this solution Helpfull? Yes (4) | No   

abhyuday pal  (10 years ago)

nowhere its mentioned that repetition is not allowed.
so the answer should be 7*7*7*7*3*7

Is this solution Helpfull? Yes (1) | No (3)  

sindhu  (10 years ago)

ans: 420
bcz it is 6 digit num ------
1st digit : we can take any number frm 1 to 7
and second to last should be even 2,4 or 6
so ans is 7*5p3 = 420

Is this solution Helpfull? Yes (1) | No   

santhosh mohan  (10 years ago)

What if repetition is allowed???

Is this solution Helpfull? Yes | No   

vishnupriya  (10 years ago)

ans is 720

Is this solution Helpfull? Yes | No   

payal sharma  (10 years ago)

if the second last is even then a total of 3 digits can be filled.
if the number to be formed is odd then the 6th place has 4 digits that can be filled.
hence, 2*3*4*5*3*4=720

Is this solution Helpfull? Yes | No   

sravya  (10 years ago)

135462
second to last is even and the 6 digit is an even number

Is this solution Helpfull? Yes | No   

shyam  (10 years ago)

2*3*4*5*3*2=720

Is this solution Helpfull? Yes | No   

PRADEEPA  (10 years ago)

ans:720
explanation:2*3*4*5*2*3=720

Is this solution Helpfull? Yes | No   

kamlesh mishra  (10 years ago)

ans 720

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.