IBM
Exam
Logical Reasoning
Number Series
1.30.5,31,30,0,67.2,67,70,100,183.7,?
2.11,8,17,14,23,24,31,32,?
3.-12,6,-15,-5,28,-14,9,3,-18,?
4.340,680,1428,?
5.-27,9,-3,81,-27,9,54,?
6.18,6,24,4,30,10,12,2,6
7.1/5,1/2,1/3,2/5,1,2/3,3/5,1,3/2,1,4/5,?
8.42,78,89,68,49,61,39,63,76,?
9.1,2,2,4,8,1,8,1/2,4,1,1,4,4,?
10.-16,-8,4,24,12,-6,-40,?
11.4,3,6,5,11,10,19,18,30,29,?
12.3,4.5,7,4,6,8.5,5,7.5,10,6
Read Solution (Total 33)
-
- 6) 18 6 24 4 30 10 12 2 6 ?
Split as 18 6| 24 4 |30 10| 12 2| 6 ?
18/6=3,
24/4=6,
30/10=3,
12/2=6
Its 3,6,3,6 combination series
So next 6/x=3
6/3=x
2=x
X=2 - 8 years agoHelpfull: Yes(20) No(0)
- 2.Prime nos are 11 , 13, 17 , 19, 23 , 29, 31, 37, 41,43
puzzles Given 11, 8, 17, 14, 23, 24, 31, 32, ??
Sequence Formation : alternate prime num -5
ie Seq Formed as follows :
11 , 13-5, 17 , 19-5, 23 , 29-5, 31 , 37-5,41,43-5
that equals Given Sequence : 11,8,17,14,23,24,31,32
no next numbers will be 41,38
ans will be 41. ty - 8 years agoHelpfull: Yes(17) No(3)
- 3. -12,6,-15,-5,28,-14,9,3,-18
Ans: multiplying alternatively by2,-2,3,-3
12=6×-2
-15=-5×3
28=-14×-2
9=3×3
-18=9×2
Next will be 9
- 8 years agoHelpfull: Yes(14) No(5)
- 2.ans is 41 bco its a has a part of next to nexr prime no like11,17,23,31,41
- 8 years agoHelpfull: Yes(13) No(31)
- Q2:
11,8,17,14,23,24,31,32
DIFFERENCES ARE -3,9,-3,9,1,7,1.?
S0 ?=7
SO 32+7=39 - 8 years agoHelpfull: Yes(12) No(8)
- Q5. -27,9,-3,81,-27,9,54,?
-27,9,-3| 81,-27,9| 54,?
9*-3=-27 |-27*-3=81 |X*-3=54
-3*-3=9 |9*-3=-27 |
therefore, X= -18 - 8 years agoHelpfull: Yes(12) No(10)
- 340,680,1428,
680/340=2
1428/680=2.1
(series will be 2,2.1,2.2(next))
x/1428=2.2
x=1428*2.2
=3141.6(ans) - 8 years agoHelpfull: Yes(12) No(0)
- 11.
4,3| 6,5| 11,10| 19,18| 30,29| ?
3+3=6
5+6=11
10+9=19
18+12=30
29+15=44
Therefore, Ans=44
- 8 years agoHelpfull: Yes(9) No(5)
- Question 4:
346,680,1428,?
680/346=1.9~2.0,
1428/680=2.1
x/1428=2.2
therefore....
1428*2.2=3141.6
Ans 3141.6 - 8 years agoHelpfull: Yes(6) No(7)
- 12. Answer will be 11.5
3 *1.5 = 4.5 + 2.5 = 7
4*1.5 = 6 + 2.5 = 8.5
5*1.5 = 7.5 + 2.5 = 10
6*1.5 = 9 + 2.5 = 11.5 - 8 years agoHelpfull: Yes(6) No(4)
- 7.
1/5,1/2,1/3|2/5,1,2/3|,3/5,3/2,1,|4/5,?,?
multiplied by 2 , 3 then 4...each part
1/5*2 = 2/5
1/2*2 = 1
1/3*2 = 2/3
then
1/5*3 = 3/5
1/2*3 = 3/2
1/3*3 = 1
then
1/5*4 = 4/5
1/2*4 = 2
so ans 2. - 8 years agoHelpfull: Yes(6) No(1)
- 5)(-27,9,-3) (81,-27,9) (54,?)
-3*-3=9,-3*9=-27
9*-3=-27,9*9=81
6*-3=-18,6*9=54
Ans:-18 - 7 years agoHelpfull: Yes(5) No(1)
- 11. divide in group of two number.
like 4 3|6 5|11 10|19 18|30 29|?
by seeing the series
6-3=3
11-5=6
19-10=9
30-18=12
?-29=15
so,answer is 44
- 8 years agoHelpfull: Yes(4) No(1)
- Q12.the calculation will be ------>> 3+1.5=4.5
4.5+2.5=7
4+2=6(adding 0.5 with 1.5, that is equal to 2)
6+2.5=8.5
5+2.5=7.5(adding 0.5 with 2 we get 2.5)
7.5+2.5=10
6+3=9(again adding 0.5 with 2.5 we get 3)
so the answer will be 9 - 8 years agoHelpfull: Yes(4) No(1)
- 10)
-16,-8,4,24,12,-6,-40,?
-16,-8,4,|24,12,-6|,-40,?
-16/2=-8
-8/-2=4
24/2=12
12/-2=-6
-40/2=-20
-20/-2=10
Answer is -20,10 - 8 years agoHelpfull: Yes(3) No(0)
- Q 6: - ans 2
Device in two group
18,6. #6*3
24,4. #4*6
30,10. #10*3
12,2. #2*6
6,? #2*3
Ans: 2 - 8 years agoHelpfull: Yes(2) No(4)
- 4,3,6,5,11,10,19,18,30,29
difference are=3,6,9,15
15+29=44
- 8 years agoHelpfull: Yes(2) No(0)
- Q1. 184.
The fraction part 30.5 is becoming 31.similarly 67.2 and 183.7 will be 184 - 7 years agoHelpfull: Yes(2) No(7)
- 6.>> 18,6,24,4,30,10,12,2,6
make pair of 2
18/6=3
24/4=6
30/10=3
12/2=6
6/X=3
so the ans is X= 2 - 7 years agoHelpfull: Yes(2) No(0)
- Question no. 8
Right serie is 52,62,42,78,89,68,49,61,39,63,76, ?
(52,62,42),(78,89,68),(49,61,39),(63,76, x)
62 --> 52 + 10... 42 --> 52 - 10
89 --> 78 + 11... 68 --> 78 - 10
61 --> 49 + 12... 39 --> 49 - 10
76 --> 63 + 13... x --> 63 - 10
Ans : 53 - 7 years agoHelpfull: Yes(2) No(0)
- 12.ans will be 9
11.43
10.-20
- 8 years agoHelpfull: Yes(1) No(0)
- 6. 18,6,24,4,30,10,12,2,6,?
first take d alternate nos.
first part-18,24,30,12,6
if u can see its multiple of 6
so 6*3=18
6*4=24
6*5=30
6*2=12
6*1=6
second term- 6,4,10,2, ?
these are multiple of 2
2*3=6
2*2=4
2*5=10
2*1=2
so in multiples of 2 evry no is multiplied sequencly but it is not multiplied by 4
therefore 2*4=8
ans 8 - 8 years agoHelpfull: Yes(1) No(4)
- Q1. (31 + 30 )/2 = 30.5 (No difference at all) so 30.5,31,30
Now (67+70)/2 = 68.5-67.2 = 1.3 difference
So Now there should be 2.6 difference, as difference of 0,1.3, 2.6 etc.
100,183.9, ?
(183.9 + x ) / 2 = 100 +2.6
x + 183.9 = 102.6 * 2
x =21.3 - 8 years agoHelpfull: Yes(1) No(9)
- Q9, Question is wrong, right series is
1,2,2,4,8,1,8,1/2,4,1,4,4
Consider the numbers in odd places ie, 1,2,8,8,4,4
Consider the numbers in even places ie, 2,4,1,1/2(0.5),1,4
Multiply both odd nd even place numbers=
1*2=2
2*4=8
8*1=8
8*0.5=4
4*1=4
finally 4*4=16 - 7 years agoHelpfull: Yes(1) No(1)
- 12> (3,4.5,7)-(4-6-8.5)-(5,7.5,10)-(6, .....
here 4.5=3+3*1/2
6=4+4*1/2
hence 9=6+6/2
ans 9
- 8 years agoHelpfull: Yes(0) No(2)
- Q7.)the series should be
1/5,1/2,1/3,2/5,1,2/3,3/5,1 1/2,1,4/5
1st series= (1/5, 2/5, 3/5, 4/5)
diff bwn each term= -1/5
2nd series= (1/2, 1, 1 1/2, x)= (0.5, 1, 1.5, 2) => x=2
diff bwn each term= -0.5
3rd series= (1/3, 2/3, 1, x)= > x=4/3
diff bwn each term= -1/3
ans = 2 - 8 years agoHelpfull: Yes(0) No(3)
- Q4. 340,680,1428,?
340*2=680
1428*2=2856 - 8 years agoHelpfull: Yes(0) No(7)
- can anyone solve q.no 1 and 8?
- 8 years agoHelpfull: Yes(0) No(0)
- 6) Ans: ( -18 )
-27,9,-3,81,-27,9,54,?
we will make three sets
(-27,9,-3)(81,-27,9)(54,?)
1st term 2nd term
------------ --------------
-3*-3=9 9*-3= -27
9*-3= -27 -27*-3= 81
54= -18*-3
so,
ANS is -18 - 7 years agoHelpfull: Yes(0) No(1)
- 1)200 Round off value 183.2. close to 200 so 200
- 7 years agoHelpfull: Yes(0) No(1)
- 7.1/5,1/2,1/3,2/5,1,2/3,3/5,1,3/2,1,4/5,?
1st series (1/5,2/5,3/5,4/5....)
2 nd series(1/2,2/2,2/3.....)
3 rd series(1/3,2/3,3/3,3/4....)
therefore after 4/5 , 4/2=2 is the ans
ans:2 - 7 years agoHelpfull: Yes(0) No(0)
- 1. 30.5=31
183.9=184
now the series becomes
31,31,30,0,67,67,70,100,184,?
ans is 184
make pairs ,1st pair no difference
2nd pair 30 is difference
3rd pair no diff
4th pair 30 is diff
so last pair no diff should be thr 184 - 7 years agoHelpfull: Yes(0) No(0)
- 3. -12,6,-15,-5,28,-14,9,3,-18,?
here,
6*-2=-12; -5*3=-15
-14*-2=28; 3*3=9
hence, 9*-2=-18 - 7 years agoHelpfull: Yes(0) No(0)
IBM Other Question
What does the following statement mean?
int (*a)[4]
-16,-8,4,24,12,-6,-40,?
-5,1,-11,23,29,17,-20,-14,?