Latest Infosys Aptitude Question SOLUTION: 12towns are divided into 4group of 3 in each. If any two towns in same group are connected by 3 direct lines and by different group by 1 direct line. Find the total no of direct li

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12towns are divided into 4group of 3 in each. If any two towns in same group are connected by 3 direct lines and by different group by 1 direct line. Find the total no of direct line?

Asked In Infosys asxa asxaxax (10 years ago)

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deevi.sriramya  (10 years ago)

81 direct lines

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deepti singh  (10 years ago)

90 direct lines

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madhuri gupta  (10 years ago)

90 direct lines

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Shanmugapriya.N  (10 years ago)

Ans_ 48
direct lines in same group is 36
ie.
in 1group having 3 towns each town having 3 dirc conn then tot lines in 1 group is 9.
for 4 group=36
for diff line it is 3 for each group tot is 12.
36+12=48 lines.

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Nalini Chimata  (10 years ago)

Ans_ 57
direct lines in same group is 36
ie.
in 1group having 3 towns each town having 3 dirc conn then tot lines in 1 group is 9.
for 4 group 36 and
there are 3 towns in each group,there are 4 such towns.
1st group can make 3*4=12 direct lines,2nd group can make 3*2=6 direct lines,3rd group can form 3*1=3 direct lines.
total no.of lines =36+12+6+3=57.

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UvRocK$  (10 years ago)

there will be 9 direct lines.
3*3.

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Selvi Raju  (10 years ago)

any one explain the question please

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jayanta mondal  (10 years ago)

15 direct line

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Khushboo Porwal  (10 years ago)

18 direct lines

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Prabhu Vignesh Kumar  (10 years ago)

Direct lines per same group is (3*3)*4=36

Direct lines per different group is(1- 2,3,4)27lines+(2- 3,4)18lines+(3-4)9lines=54

so total 90

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Swarnalatha Gadhivan  (10 years ago)

G1 , G2 , G3 , G4 be 4 groups

G1= t1,t2,t3

G2=t4,t5,t6

G3=t7,t8,t9

G4=t10,t11,t12 are the towns in each groups

t1,t2,t3=9 ; t4,t5,t6=9 ; t7,t8,t9=9 ; t10,t11,t12=9 (9+9+9+9=36 direct lines same group)

9+9+9+9+9+9+9+9+9=81 (direct lines in different group)

81+36=117 direct lines

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maharaja  (9 years ago)

question nahin samjh aaya bhai log....

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sanjeet kumar  (9 years ago)

3*36+16*3=156 ans

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priyanka  (9 years ago)

(a1,b1,c1)(a2,b2,c2).....4 groups.
a1 ,b1,c1 connected using 9 direct lines---total 9*4=36
a1 to a2,b2...remaining ----9 lines i.e each one--so total 9*12=108
ans=108+36=144

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