Perfect Cube Series


Perfect Cube Series
Perfect cube series is a arrangement of numbers in a certain order,where some numbers this Types of Series are based on cube of a number which is in same order and one cube number is missing in that given series.

we need to observe and find the accurate number to the series of numbers. This type of problem are given in Quantitative Aptitude which is a very essential paper in banking exam.Under below  given some more example for your better practice.

All numbers are arranged in sequence order. we need to observe and find the accurate number to this type series of numbers. Here we learn the perfect cube series of Example.

This type of problem are given in Quantitative Aptitude which is a very essential in banking exam. Under below  given some more example for your better practice.

In perfect cube series number is a combination of cube number are arranged. In example 1) 1331, 1728, 2197, ?  where you need to count them in a one step or two step calculation for obtain the difference common result according with the series of ratio numbers .

At first you can calculate missing number in ratio series  and  that you place the actual missing number in the ? or missing place. Be prepared when you calculate differences because it is either one or two step calculation. So when you calculate and get result of  two difference numbers you need follow some step wise.

At first calculate the first number cube value and second number cube value if all number are maintain a sequential order cube value then follow same steps which is carry up to last and after that you get actual missing number by finding the common value when you put the missing number you have noticed that all series numbers are common difference in between them.

This kind of missing series calculation you go thorough some common calculation shortcut tricks  using cube and cube shortcut tricks, or you memorize the 1 to 30 cube series number value.

In this type series example questions, it is sounds hard, but it really isn’t.  Get it? Once you have done this, by practice with more example then you just easily can do in your way as well competitive and as in bank exam also . So, each of our examples are given below.

 


Example #1
3375, ? , 24389, 46656, 79507

  1. 10442
  2. 10648
  3. 11976
  4. 18002

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (B)
How to Solve
153 = 3375
223 = 10648
293 = 24389
363 = 46656
433 = 79507
(Each cube digit added with 7 to become the next cube number)
Rough Workspace

Example #2
729, 6859, 24389, ? , 117649, 205379

  1. 58937
  2. 52335
  3. 55324
  4. 59319

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (D)
How to Solve
93 = 729
193 = 6859
293 = 24389
393 = 59319
493 = 117649
593 = 205379
(Each cube digit added with 10 to become the next cube number)
Rough Workspace

Example #3
1000, 8000, 27000, 64000, ?

  1. 125000
  2. 156000
  3. 132000
  4. 163000

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (A)
How to Solve
103 = 1000
203 = 8000
303 = 27000
403 = 64000
503 = 125000
(Each cube digit added with 10 to become the next cube number)
Rough Workspace

Example #4
1331, ? , 35937, 85184, 166375

  1. 10539
  2. 10538
  3. 10649
  4. 10648

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (D)
How to Solve
113 = 1331
223 = 10648
333 = 35937
443 = 85184
553 = 166375
(Each cube digit added with 11 to become the next cube number)
Rough Workspace

Example #5
125, ? , 343, 512, 729, 1000

  1. 208
  2. 216
  3. 224
  4. 285

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (B)
How to Solve
53 = 125
63 = 216
73 = 343
83 = 512
93 = 729
103 = 1000
Rough Workspace

Example #6
1, 27, 125, 343, ? , 729

  1. 512
  2. 545
  3. 487
  4. 590

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (A)
How to Solve
13 = 1
33 = 27
53 = 125
73 = 343
83 = 512
93 = 729
Rough Workspace

Example #7
125, ? , 343, 512, 729, 1000

  1. 196
  2. 267
  3. 216
  4. 268

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (C)
How to Solve
53 = 125
63 = 216
73 = 343
83 = 512
93 = 729
103 = 1000
Rough Workspace

Example #8
8, 64, ? , 512, 1000, 1728

  1. 274
  2. 174
  3. 357
  4. 216

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (D)
How to Solve
23 = 8
43 = 64
63 = 216
83 = 512
103 = 1000
123 = 1728
(Each cube digit added with 2 to become the next cube number)
Rough Workspace

Example #9
4096, 4913, 5832, ? , 8000

  1. 6163
  2. 6859
  3. 6234
  4. 7356

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (B)
How to Solve
163 = 4096
173 = 4913
183 = 5832
193 = 6859
203 = 8000
Rough Workspace

Example #10
1331, ? , 29791, 68921, 132651

  1. 9261
  2. 8343
  3. 7252
  4. 6325

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (A)
How to Solve
113 = 1331
213 = 9261
313 = 29791
413 = 68921
513 = 132651
(Each cube digit added with 10 to become the next cube number)
Rough Workspace

Example #11
1331, 1728, 2197, ?

  1. 2584
  2. 2744
  3. 2832
  4. 3034

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (B)
How to Solve
113 = 1331
123 = 1728
133 = 2197
143 = 2744
Rough Workspace

Example #12
1728, 1331, ? , 729, 512

  1. 300
  2. 900
  3. 990
  4. 1000

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (D)
How to Solve
123 = 1728
113 = 1331
103 = 1000
93 = 729
83 = 512
Rough Workspace

Example #13
1000, 8000, ? , 64000, 125000

  1. 21000
  2. 25000
  3. 27000
  4. 31000

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (C)
How to Solve
103 = 1000
203 = 8000
303 = 27000
403 = 64000
503 = 125000
(Each cube digit added with 10 to become the next cube number)
Rough Workspace

Example #14
125000, 64000, ? , 8000, 1000

  1. 18000
  2. 23000
  3. 27000
  4. 35000

Show Answer Show How to Solve Open Rough Workspace

Answer: Option (C)
How to Solve
503 = 125000
403 = 64000
303 = 27000
203 = 8000
103 = 1000
(Each cube digit is decreased by 10 to become the next cube number)
Rough Workspace

 

Other Types of Number Series

 

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