Number Series Concept

Number Series

What is Number Series?

Number series is a arrangement of numbers in a certain order, where some numbers are wrongly put into the series of numbers and some number is missing in that series, we need to observe and find the accurate number to the series of numbers.

In competitive exams number series are given and where you need to find missing numbers. The number series are come in different types. At first you have to decided what type of series are given in papers then according with this you have to use shortcut tricks as fast as you can .

Different types of Number Series

There are some format of series which are given in Exams.

Perfect Square Series:

This Types of Series are based on square of a number which is in same order and one square number is missing in that given series.

Example 1: 441, 484, 529, 576?

Answer: 441 = 212, 484 = 222, 529 = 232, 576 = 242 , 625 = 252.

Perfect Cube Series: 

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

Example 2: 1331, 1728, 2197, ?

Answer : 113 ,  123 ,  133 ,  143 

Geometric Series:

This type of series are based on ascending or descending order of numbers and each successive number is obtain by multiplying or dividing the previous number with a fixed number.

Example 3: 5, 45, 405, 3645,?

Answer: 5 x 9 = 45, 45 x 9 = 405, 405 x 9 = 3645, 3645 x 9 = 32805.

Two stage Type Series:

A two tier Arithmetic series is one in which the differences of successive numbers themselves form an arithmetic series.

Example 4: i. 3, 9, 18, 35, 58,——

ii. 6, 9, 17, 23,———-

Mixed Series:

This type of series are more than one different order are given in a series which arranged in alternatively in a single series or created according to any non-conventional rule. This mixed series Examples are describes in separately.

Examples 5: 

11, 24, 50, 102, 206, ?

Answer: 

11 x 2 = 22 +2 = 24,

24 x 2 = 48 + 2 = 50,

50 x 2 = 100 + 2 = 102,

102 x 2 = 204 + 2 = 206,

206 x 2 = 412 + 2 = 414.

So the missing number is 414.

Number Series Quiz

Number Series Quiz

Directions (1-10): What will come in place of the question marks (?) in the following Number series?

1.    0, 6, 24, 60, 120, 210, ?

A.  336       

B.  349

C.  312

D.  337

E.  None of these

2.    11, 14, 19, 22, 27, 30, ?

A.  39

B.  34

C.  36

D.  35

E.  None of these

3.    6, 12, 21, ? , 48

A.  33

B.  39

C.  36

D.  31

E.  None of these

4.    18, 22, 30, ? ,78, 142

A.  44

B.  35

C.  46

D.  48

E.  None of these

5.    73205, 6655, 605, 55, ?

A.  9

B.  5

C.  13

D.  11

E.  None of these

6.    25, 100, ?, 1600, 6400

A.  400

B.  300

C.  360

D.  420

E.  None of these

7.    125, ?, 343, 512, 729, 1000

A.  216

B.  215

C.  256

D.  225

E.  None of these

8.    1 , 9 , 125 , 343 , ? , 1331

A.  730

B.  729

C.  512

D.  772

E.  None of these

9.    121, 144, 169, ?, 225

A.  180

B.  172

C.  186

D.  196

E.  None of these

10.  ?, 2116, 2209, 2304, 2401, 2500

A.  2124

B.  1972

C.  1521

D.  2025

E.  None of these

Answers with Explanation:-

1.     (A)

The given series is : 13 – 1, 23 – 2, 33 – 3, 43 – 4, 53 – 5, 63 – 6,

So the missing term = 73 – 7 = 343 – 7 = 336 .

2.    (D)

The pattern is + 3, + 5, + 3, + 5, …………

So the missing term is = 30 + 5 = 35 .

3.    (A)

The pattern is + 6, + 9, + 12, +15 ………..

So the missing term is = 21 + 12 = 33 .

4.    (C)

The pattern is +4, +8, +16, +32, +64

So the missing term is = 30 + 16 = 46 .

5.    (B)

5 x 11 = 55, 55 x 11 = 605, 605 x 11 = 6655, 6655 x 11 = 73205

6.    (A)

25 x 4 = 100, 100 x 4 = 400, 400 x 4 = 1600, 1600 x 4 = 6400.

7.    (A)

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

8.    (B)

 13 , 33 , 53 , 73 , 93 , 113

9.    (D)

121 = 112, 144 = 122, 169 = 132, 196 = 142, 225 = 152.

10.  (D)

 2025 = 452, 2116 = 462, 2304 = 482, 2401 = 492, 2500 = 502

TIME TAKEN

Within 5 min         : EXCELLENT

5-8 min                 : YOU CAN DO BETTER

More than 8 min   : YOU NEED TO WORK HARD

Banking Pathway 2015 : English (Mix Quiz)

Dear Readers,

                     Today we are providing you quiz on English which is one of the most

 important sections of banking exams, in which you can score maximum with ease 

if you are practising on very regular basis, It is crucial for all the upcoming banking 

exams, IBPS/SBI/RRB etc.

Directions (Q. 1-10): In the following passage, some of the words have been 
left out, each of which is indicated by a number. Find the suitable word from
the options given against each number and fill up the blanks with appropriate
words to make the paragraph meaningful.

Mass migration has produced a huge worldwide economy of its own which has (1) so fast 
during the past few years that the figures have (2) experts. Last year
remittances sent home by migrants were expected to (3) $232 billion according to the World
Bank which (4) these figures. (5) though the flow of remittances is to alleviate the plight of
the migrant’s family it cannot on its own lift entire nations out of poverty. Those who study
the (6) of remittances argue that the money allows poor countries to put off basic decisions
of economic management like (7) their tax collection systems and building schools.
Remittances to poor countries can also (8) the fact that they do not produce much at home.
The   challenge is now to find programmes that (9) the benefits of remitted cash
while (10) some of its downside. 

1. 

1) accelerated 

2) grew 

3) expand 

4) increase 

5) escalating 

2. 

1) strike 

2) encouraged 

3) astonished 

4) convinced

5) disturb 

3. 

1) rise 

2) represent 

3) project 

4) exceed 

5) recover 

4. 

1) record 

2) tracks 

3) estimate 

4) report 

5) surveys 

5. 

1) Detrimental 

2) Minor 

3) Profuse 

4) Benefited 

5) Vital 

6. 

1) circumstance 

2) profit 

3) impact 

4) status 

5) Nuality 

7. 

1) declaring 

2) established 

3) measuring 

4) reforming 

5) govern 

8. 

1) mask 

2) hid 

3) review 

4) display 

5) supported 

9. 

1) launch 

2) predict 

3) optimum 

4) appreciate 

5) maximize 

10. 

1) augmenting 

2) avoiding 

3) suspend 

4) protects 

5) detracting

Directions (Q. 11-15) In each of the following sentences there are two blank spaces. 
Below each sentence there are five pairs of words denoted by numbers (1), (2), (3)), ,(4) and (5). 
Find out which pair of words can be filled up in the blanks in the sentence in the same 
sequence to make the sentence grammatically correct and meaningfully complete.

11. People were ________ of the two brothers because their behaviour seemed________.

1) anxious, notorious 

2) suspicious, unusual

3) unmindful, gentle 

4) aware, dispassionate

5) cautious, generous

12. The army regime has announced firm steps on ________ democracy and fighting ________.

1) clamping, anarchy

2) ruling, voters

3) restoring, terrorism

4) enlightening, anti-corruption

5) waiving, minorities

13. ________the death of one of the contestants, the election to the seat has been________ .

1) Despite, postponed

2) Because of, conducted

3) With, skipped

4) In spite of, stopped

5) Owing to, countermanded

14. The captain of our team was ________ because of ________ the performance of our opponents. 

1) upset, poor 

2) nervous, uneventful

3) happy, excellent 

4) elated, bad

5) annoyed, thorough

15. He objected to the proposal because it was founded on a ________ principle 
and also was ________ at times. 

1) Faulty, desirable 

2) Imperative, reasonable 

3) Wrong, inconvenient 

4) Sound, acceptable 

5) Conforming, deplorable 

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