Latest TCS Aptitude Question SOLUTION: three distinct single digit numbers A,B,C are in GP. If abs(x) for real x is the absolute value of x(x if x is +ve or zero, -x if x is -ve), then the number of different possible v

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three distinct single digit numbers A,B,C are in GP. If abs(x) for real x is the absolute value of x(x if x is +ve or zero, -x if x is -ve), then the number of different possible values of abs(A+B-C) is:
1) 5
2) 4
3) 6
4) 3

Asked In TCS shikha panwar (9 years ago)

Unsolved Read Solution (9)

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Read Solution (9) :

RAKESH  (9 years ago)

1) 5
A,B,C may be
(1,2,4) & (4,2,1)
(1,3,9) & (9,3,1)
(2,4,8) & (8,4,2)
(4,6,9) & (9,6,4)

find abs(A+B-c) for these 8 GPs
1, 5, 5, 11 , 2, 10, 1 , 11

we get 5 different values (1,2,5,10,11)

Is this solution Helpfull? Yes (50) | No (6)  

hima  (9 years ago)

@rakesh how 4,6,9 will be in gp?

Is this solution Helpfull? Yes (8) | No (5)  

sneha  (9 years ago)

@rakesh why didn't u consider the negative numbers like (-4,-2,-1) they are also in g.p ......plz reply

Is this solution Helpfull? Yes (3) | No   

amit palanpure  (9 years ago)

6 is ans

1 2 4
2 4 8
1 3 9
-1 -2 -4
-2 -4 -8
-1 -3 -9

Is this solution Helpfull? Yes (2) | No (10)  

Vaka Syam Prasad Reddy  (9 years ago)

@HIMA:

In mathematics, a geometric progression (also inaccurately known as a geometric series) is a sequence of numbers such that the quotient of any two successive members of the sequence is a constant called the common ratio of the sequence.

a geometric sequence can be written as:

aq^0=a, aq^1=aq, aq^2, aq^3, ... where q ≠ 0, q is the common ratio and a is a scale factor.

Ex : (4/6) = (6/9) = 2/3.
(9/6) = (6/4) = 3/2.

Is this solution Helpfull? Yes (1) | No   

abhisek banerjee  (9 years ago)

rakesh is absolutely right

Is this solution Helpfull? Yes | No (4)  

arghya dasgupta  (9 years ago)

2) 4
For a set of +ve value ,there should be only 2 sets of solutions->
1. if the gp is in the increasing pattern . e.g.- AC

AND ,same things follows for the -ve set of values.
so total no. of diffrent values are: 4

Is this solution Helpfull? Yes | No   

Sanchit Gupta  (8 years ago)

answer is 5
rakesh is right plus if u consider negative value and put in the equation abs(A+B-C) u will
get the same result as before

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Anasua Das  (8 years ago)

which is the correct answer??

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