Latest Elitmus Aptitude Question SOLUTION: if x.y and z can only take the values 1,2,3,4,5,6,7 then find the number of solution of the equation x+y+z=12

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(#M40029751) ELITMUS Numerical Ability question C&P Keep an EYE

if x.y and z can only take the values 1,2,3,4,5,6,7 then find the number of solution of the equation x+y+z=12

Asked In Elitmus Arpitha K (10 years ago)

Unsolved Read Solution (10)

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Read Solution (10) :

sivaramakrishna  (10 years ago)

(1,4,7),(1,5,6),(2,3,7),(2,4,6),(2,5,5),(3,4,5),(3,6,3),(4,4,4)====>>>
6+6+6+6+3+6+3+1=37.

Is this solution Helpfull? Yes (67) | No (9)  

Shahbaz Sharif  (10 years ago)

1-->147,156,165,175=4
2-->237,246,255,264,273=5
3-->327,...............=6
4-->......................=7
5-->...................=6
6-->.................=5
7-->.................=4
total=37

Is this solution Helpfull? Yes (21) | No   

nadia  (10 years ago)

its 37 :)
741,732,723,714,651,642,633,624,615,561,552,543,534,525,516--------------------------

Is this solution Helpfull? Yes (3) | No   

saurabh agarwal  (10 years ago)

(1,4,7),(1,5,6),(1,6,5),(1,7,4),(2,3,7),(3,2,7),(4,1,7),(5,1,6),(6,1,5),(7,1,4)
ans=10.

Is this solution Helpfull? Yes (2) | No (17)  

Yapadinne Raju  (10 years ago)

(1,4,7),(1,5,6),(1,6,5),(1,7,4)...> if x can take 1 only(4 possibilities)
(2,3,7),(2,4,6),(2,5,5),(2,6,4),(2,7,5)....> if x can take 2 only(5 possibilities)
if x can take 3 only (6 possi)
.............. 4 only (7 possi)
...............5 only (8 possi)
............6 only (7 possi)
........7 only (6 possi)
so adding these possibilities are we will get 43

Is this solution Helpfull? Yes (2) | No (7)  

Syed Zohair Abbas  (10 years ago)

it should be 7x7x7=343

Is this solution Helpfull? Yes | No (22)  

rishabh shankar  (10 years ago)

57
19 soln for x=i where i=1,2,3...7. Similarly 19 for y, 19 for z.

Is this solution Helpfull? Yes | No (6)  

Prodyumna Majumder  (10 years ago)

AGREE WITH SIVARAMAKRISHNA..!!!
and how cum itz 343 @syed..!!

Is this solution Helpfull? Yes | No (8)  

Mr. Hmp  (10 years ago)

If repetition of digits in not allowed then answer will be 30
else answer will be 37 as told by "SIVARAMAKRISHNA"

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ASHISH MUKHERJEE  (9 years ago)

if repetition of no allowed then ans:-37
other wise 30.

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