Latest self Aptitude Question SOLUTION: 2.3.4.15.12 3.4.5.28.20 4.5.6.45.30 5.6.7.a .42 6.7.8.91.56

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(#M40001473) SELF question can you find a? Keep an EYE

2.3.4.15.12
3.4.5.28.20
4.5.6.45.30
5.6.7.a .42
6.7.8.91.56

ULAGUNATHAN (13 years ago)

Solved Karthick Babu Read Solution (6)

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Read Solution (6) :

sanjeev  (13 years ago)

value of a will be 66
simple soln is that serieis given as
2.3.4.15.12
3.4.5.28.20
4.5.6.45.30
5.6.7.a .42
6.7.8.91.56 so check each colounm u will find the increasing diff...in 'a' coloumn the diff is of 4..means 15...then 28 diff is of 13..then next term can b find out by adding 4 in 13..means add 17 to 28 u get 45 then same way keep on...

Is this solution Helpfull? Yes (8) | No (2)  

Karthick Babu  (13 years ago)

2 3 4 5*3 3*4
3 4 5 7*4 4*5
4 5 6 9*5 5*6
5 6 7 11*6 6*7
6 7 8 13*7 7*8
So the ans is 66

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

ULAGUNATHAN  (13 years ago)

2(first term)+3(thrid term) =5
5-1= 4
4 * 3(2nd term) =12 (fourth term)
proceeding like this...
5+7 =12
12-1=11.
11*6=66
so a = 66

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

bharat maheshwari  (13 years ago)

77. 3*5=15
4*7=28
5*9=45
6*11=77

Is this solution Helpfull? Yes (2) | No (5)  

Gajendra Yadav  (13 years ago)

2 3 4 15 12
3 4 5 28 20
4 5 6 45 30
5 6 7 a 42
6 7 8 91 56
3*4 + 3*1=15
4*5 + 4*2=28
5*6 + 5*3=45
6*7 + 6*4=a=66=answer...
7*8 + 7*5=91
3*4+3*1=12

Is this solution Helpfull? Yes (2) | No (1)  

SURAJ  (13 years ago)

a=42 + 6*(6-2) = 66
a=last no. + 2nd no.*(2nd no. - 2)

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