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three single digit nos A,B,C are in GP.If abs(x) for real x is absolute value of x (x if x is +ve/0 and -x if x is-ve),then the number of different possible values of abs(A+B-C) is
a)3 b)5 c)6 d)4
Read Solution (Total 4)
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- Ans is 5
For(1,2,4) abs(1+2-4)=1
For(1,3,9) abs(1+3-9)=5
For(2,4,8) abs(2+4-8)=2
For(1,-2,4) abs(1-2-4)=5
For(1,-3,9) abs(1-3-9)=11
For(2,-4,8) abs(2-4-8)=10
So the different possible values are 1,2,5,10,11.
- 10 years agoHelpfull: Yes(7) No(2)
- answer is definitely 6 as possibilities are: 1 2 4, 1 3 9 , 2 4 8, also 4 6 9 are also in gp with r=3/2 and we can have negative terms also as -1 -2 -4,-1 -3 -9,-2 -4 -8,-4 -6 -9 now if we calculate diff value of a+b-c we will get eight values in which two are common so total six diff values is the answer
- 10 years agoHelpfull: Yes(3) No(0)
- ans 3
1 2 4
2 4 8
1 3 9 are only possible single digit GP - 10 years agoHelpfull: Yes(1) No(3)
- d)4
one for all are +ve or negative
2nd if a is -ve (same if both b and c is -ve)
3rd if b is -ve (same if both a and c is -ve)
4th if c is -ve (same if both b and a is -ve) - 10 years agoHelpfull: Yes(0) No(2)
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