IBM
Company
Logical Reasoning
Number Series
Q. What is the next number of the following sequences
115,100,86,74,65,60,?
Read Solution (Total 5)
-
- 115,100,86,74,65,60,?
115-15=100
100-14=86
86-12=74
74-9=65
65-5=60
60+0=60(ans)(-15+1=-14,-14+2=-12,-12+3=-9,-9+4=-5,-5+5=0) - 10 years agoHelpfull: Yes(22) No(2)
- 115-15=100
100-14=86(15-1=14)
86-12=74 (14-2=12)
74-9=65 (12-3=9)
65-5=60 (9-4=5)
60-0=60 (5-5=0) - 10 years agoHelpfull: Yes(5) No(0)
- 115-100=15
100-86=14
86-74=12
74-65=9
65-60=5
15-14=1,14-12=2,12-9=3,9-5=4, so the no should be such dats gives a diff of 5 now that could be 60 itself as 60-60=0 so 5-0=5 or 70 so that 10-5 =5. - 10 years agoHelpfull: Yes(4) No(1)
- 115 100 86 74 65 60 x (diffirence b/w the no)
15 14 12 9 5 60-x=y
1 2 3 4 (so this/next no is 5,...that means Y should be ZERO...Y is zero if and only if X is 60)
so ans is X=60
final series is "115,100,86,74,65,60,60"
- 10 years agoHelpfull: Yes(3) No(0)
- (115 -100) (100-86) (86-74) (86-65) (65-60)
15 14 12 9 5
(15-14) (14-12) (12-9) (9-5)
1 2 3 4 so that the next will be 5 >> (5-5) >> 0 so, 60+0=60 - 10 years agoHelpfull: Yes(2) No(2)
IBM Other Question
49,39,37,33,26,15,?
Q. What is the next number of the following sequences
1)0.8,1.8,3.6,3.6,4.6,9.2,9.2,10.2,?
2)11,8,17,14,23,24,31,32,?
3)(15*4+3)/4,16,26,(9*5+1)/5,9,19,(64*3+2)/3,65,75,(30*8+3)/8,?(it's like mixed fraction friends where i have mentioned * )
4)3,2,1,4,5,4,5,1,0,6,3,?
5)7.2,2.2,,3.2,16,11,12,60,55,56,?
6)3,5,2,100,4,7,3,196,1,6,5,?
7)2,9,5,49,11,169,?
8)2,6,5,14,11,26,17,?
9)22,19.5,21.45,33,26,15,-1,?
10)1/4,1/4,1/23/2,6,?
11)9,12,4,8,12,15,5,9,3,6,2,6,6,9,?
12)9,4,16,6,36,21,441,?