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.

 

Perfect Cube Series

 

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

Answer
153, 223, 293, 363, 433
(Each cube digit added with 7 to become the next cube number)

 

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

Answer
93, 193, 293, 393, 493, 593
(Each cube digit added with 10 to become the next cube number)

 

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

Answer
103, 203, 303, 403, 503
(Each cube digit added with 10 to become the next cube number)

 

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

Answer
113,  223,  333,  443, 553
(Each cube digit added with 11 to become the next cube number)

 

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

Answer
125 = 53, 216 = 63, 343 = 73, 512 = 83, 729 = 93, 1000 = 103

 

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

Answer
13, 33, 53, 73, 83, 93

 

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

Answer
125 = 53, 216 = 63, 343 = 73, 512 = 83, 729 = 93, 1000 = 103

 

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

Answer
23, 43, 63, 83, 103, 123
(Each cube digit added with 2 to become the next cube number)

 

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

Answer
4096 = 163, 4913 = 173, 5832 = 183, 6859 = 193, 8000 = 203

 

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

Answer
113, 213, 313, 413, 513
(Each cube digit added with 10 to become the next cube number)

 

Example #11
1331, 1728, 2197, ?

Answer
1331 = 113, 1728 = 123, 2197 = 133, 2744 = 143

 

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

Answer
1728 = 123, 1331 = 113, 1000 = 103, 729 = 93, 512 = 83

 

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

Answer
103, 203, 303, 403, 503
(Each cube digit added with 10 to become the next cube number)

 

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

Answer
503, 403, 303, 203, 103
(Each cube digit is decreased by 10 to become the next cube number)

 

 

Other Types of Number Series

 

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