1)8,0.5,16,4,15,0.3,50,4.5,6,0.2,30,?

2)9,4,16,6,36,21,441,?

3)4,2,5,9,5,11,13,7,16,17,9,?

4)33,8,41,46,21,67,72,47,119,124,?

5)3,2,1,4,5,4,1,0,6,3,?

6)30.5,31,30,0,67.2,67,70,100,183.9?

7)48,24,35,7,16,8,75,15,80,40,?

8)1.8,3,0,6,2.5,5,0.5,3.4,2,1.7,4.8,6,?

9)1370,1320,1070,-180,?

10)49,7,98,16,4,48,9,3,36,25,5,?

• 9,4,16,6,36,21,441,?
  9-5=4,4^2=16
  16-10=6,6^2=36
  36-15=21,21^2=441
  441-20=421,421^2=277241
• 12 years agoHelpfull: Yes(43) No(26)
• 3)ans is 21
  the series going like -
  4,(4-2),(4+1)
  9,(9-4),(9+2)
  13,(13-6),(13+3)
  17,(17-8),(17+4) so 21
• 12 years agoHelpfull: Yes(29) No(3)
• 1)1st:8,0.5,16,4
  8/0.5=16,8*0.5=4
  2nd:15,0.3,50,4.5
  15/0.3=50,15*0.3=4.5
  3rd:6,0.2,30,?
  6/0.2=30,6*0.2=1.2
  ans. 1.2
  
• 11 years agoHelpfull: Yes(23) No(2)
• ans 125
  7^2=49 ,49*2=98
  4^2=16 ,16*3=48
  3^2=9 , 9*4=36
  5^2=25 ,25 *5 =125
• 12 years agoHelpfull: Yes(12) No(3)
• really such kind of questions are asked in IBM. I mean 2 min 15 sec is nt enough 4 solving such questions
• 11 years agoHelpfull: Yes(12) No(0)
• 1) http://www.m4maths.com/13757-8-0-5-16-4-15-0-3-50-4-5-6-0-23-30.html
  
  2) http://www.m4maths.com/placement-maths-puzzle.php?pid=13734
  
  4)http://www.m4maths.com/placement-maths-puzzle.php?pid=13735
  
  5) http://www.m4maths.com/13736-3-2-1-4-5-4-1-0-6-3.html
  
  
• 12 years agoHelpfull: Yes(10) No(4)
• 10. 125 (49*2=98, 16*3=48, 9*4=36, 25*5=125)
  9. -6430 (1370-50=1320, 1320-5*50=1070, 1070-250*5=-180......)
  
• 12 years agoHelpfull: Yes(9) No(6)
• 1)5
  The given series is -:
  8,0.5,16,4,15,0.3,50,4.5,6,0.2,30,?
  Divide it in group of four
  8,0.5,16,4
  15,0.3,50,4.5
  6,0.2,30,?=5
  
• 12 years agoHelpfull: Yes(8) No(33)
• 4)33,8,41,46,21,67,72,47,119,124,?
  exp:
  21-8=13
  47-21=26
  so..
  99-47=52
  Ans: 99
• 11 years agoHelpfull: Yes(8) No(5)
• 5) 3,2,1,4,5,4,1,0,6,3
  
  Take the first three numbers
  3 - 2 = 1
  1 + 2 = 3
  
  Leave the next number
  
  Take the next three numbers
  
  5 - 4 = 1
  1 + 4 = 5
  
  Leave the next number
  
  Take the next three numbers
  
  6 - 3 = 3
  3 + 3 = 6
  
  
  So the answer is 3. :)
  
• 12 years agoHelpfull: Yes(7) No(20)
• 4)
  33,8,41,46,21,67,72,47,119,124,x
  33-8=25 left 41
  46-21=25 left 67
  72-47=25 left 119
  124-x=25, x=149
• 11 years agoHelpfull: Yes(7) No(10)
• 5) (3,2),1,(4,5),4,(1,0),6,(3,x)
  3-2=1
  4-5=-1
  1-0=1
  3-x=-1
  therefore, x=4
• 11 years agoHelpfull: Yes(6) No(0)
• 2. 81 ( 9^2=81)
  3. 20 (5, 11, 16, 20)
  4. 99 (8,21,47,99)
• 12 years agoHelpfull: Yes(5) No(3)
• Q2)
  4*4=16, 6*6=36, 21*21=441 ....and also
  9-4=5
  16-6=10
  36-21=15
  so this is going like 5,10,15... diff next diff will be 20
  so..
  441-20=421
• 11 years agoHelpfull: Yes(5) No(0)
• 1.8=3*0.6
  2.5=5*0.5
  3.4=2*1.7
  4.8=6*0.8
  ans=0.8
• 12 years agoHelpfull: Yes(4) No(0)
• 9)1370,1320,1070,-180
  here it is increasing like 5,25,125,625
  
  1370-50=1320
  1320-250=1070
  1070-1250=-180
  so
  -180-6250=-6430
• 11 years agoHelpfull: Yes(4) No(0)
• @shama vishny naik..
  bro ans will be 421 not its square
  as 9-5=4 n 4 is next to 9
  similarly 6 is next to 16, and so on so 421 should be next to 441
• 12 years agoHelpfull: Yes(3) No(0)
• 7)the ans is 155.there is multiple change of 5 and 2 consistently
  i.e
  (48,24)=24*2=48 (35,7)=7*5=35
  (16,8)=8*2=16 (75,15)=15*5=75
  (80,40)=40*2=80
  there is some relationship on multiples of 2 with each other and same in multiples of 5 where
  (48,16,80)->16*3=48 and 16*5=80
  (24,8,40)->8*3=24 and 8*5=40
  (35,75)->35*2+5=75
  (7,15)->7*2+1=15
  so the answer is (155,31)
• 12 years agoHelpfull: Yes(3) No(10)
• @divya & sowmya: Ans for 7 is 115.
  48/24=2
  35/7=5
  16/8=2
  75/15=5
  80/40=2
  75-35=40
  75+40=115
  15-7=8
  15+8=23
  So in this manner next 2 no. is 115,23.
  115/23=5.
  
• 12 years agoHelpfull: Yes(2) No(8)
• 33 8 41
  46 21 67
  72 47 119
  124
  46-33=13,72-46=26,124-72=52,21-8=13,47-21=26,
  26+(13*3)=86 ANS
• 10 years agoHelpfull: Yes(2) No(0)
• 8). 1.8=3*0.6
  2.5=5*0.5
  3.4=2*1.7
  4.8=6*0.3
  Ans:0.3
• 12 years agoHelpfull: Yes(1) No(12)
• 7)8 am i crct?
• 12 years agoHelpfull: Yes(1) No(5)
• 30.5--->31(rounded off to)---->30(rounded off to)--->0(as 30 is less than 50)
  67.2--->67(rounded off to)---->70(rounded off to)--->100(as 70 is greater than 50)
  183.9--->(rounded off to)---->184
• 11 years agoHelpfull: Yes(1) No(0)
• 10. 49*2= 98
  16*3 =48
  9*4 = 36
  25*5 = 125
  
• 11 years agoHelpfull: Yes(1) No(0)
• Q4)
  1st:33,8,41
  33-8=25 and 33+8=41
  2nd:46,21,67
  46-21=25 and 46+21=67
  3rd:72,47,119
  72-47=25 and 72+47=119
  so,4th:124,?
  124-x=25 =>124-25=x =>x=99
  so ans is 99
• 9 years agoHelpfull: Yes(1) No(0)
• 49,7,98 16,4,48 9,3,36, 24,5,x
  
  7^2=49*2=98
  4^2=16*3=48
  ..
  ..
  5^2=25*5=125
• 8 years agoHelpfull: Yes(1) No(0)
• what is the ans for 7th ques
  
• 12 years agoHelpfull: Yes(0) No(0)
• Can anyone give the solution of 5th & 6th.
  If plz mail it on arpitsangal19@gmail.com
• 12 years agoHelpfull: Yes(0) No(3)
• 9,4,16,6,36,21,441
  4*4=16, 16-10=6
  6*6=36, 36-15=21
  21*21=441 441-20=421 ans=421
  series actually start from 3
  3*3=9 9-5=4
  4*4=16 16-10=6 & so on
• 10 years agoHelpfull: Yes(0) No(0)