Number Series Questions for RBI Assistant Exam 2022

 RBI Exam Number Series Questions based on previous year-  

In this article you will get all previous year questions based on number Series. It will help you to score more in upcoming exam of RRB ASSISTANT ,which is going to be taken in upcoming months. If you want to start preparations for selecting in RBI  Exam then, you can join our live classes by simply WhatsApp by writing "RBI PREPARATION"  to '91-8527556118'.

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Q1.   4   18   48  100   180  294 

a. 448

b. 424

c.436

d.460

e.None of these.

Q2. 30   46   78 126  190  270

a.356

b. 366

c. 382

d. 398

e. None of these

Q3. 380  465   557 656 762 ? 995

a.855

b.915

c.875

d.895

e. None of these.

Q4. 12 12 18 45 180 1080 ?

a.9285

b.9530

c.9170

d.9180

e.None of these.

Q5.?  61 221 505 991 1717

a. 6

b.5

c.8

d.7

e.None of these.

Sol- Q1.Based on double common difference.

First common difference. 14  30 52 80 114

Second common difference- 16 22 28 34

So, ?  = 294 + 114 + 34 + 6 = 448.

Ans -a 

Q2. Based on common difference

  16 32 48 64 80 

?  = 270+96=366

Ans- b

Q3. Sol- Based on common difference

First C.d  = 85 92 99 106 113 120

Second c.d  = 7  7  7  7 7 

?  = 762 + 113  = 875

Option c is correct 

Q4. Sol- Series is based on multiplication by 

×1 , × 1.5 ,× 2.5 ,× 4 , × 6 ,× 8.5 -------

?  = 1080 × 8.5 = 9180.

Option d is correct.

Q5. Based on double common difference

First c.d  = 54   150  294 486 726

Second c.d  = 96 144 192 240

Third c.d  = 48 48 48

So, 61  = ? + (150-96)  = 7

Option d is correct.

In case you missed a lot of articles of math and reasoning which will be very handy from exam perspective then kindly read the following links below to read all popular articles of this site.

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Q6. 10 15 45 270 3240 ?

a. 72250

b. 77760

c. 75260

d. 85280

e. 762560

Sol- multiplication series × 1.5, × 3 , × 6 , ×12,×24 

So, 3240 × 24  = 77760.

Q7. 8  15 29 50 78 ?

a. 110

b. 112

c. 108

d.114

e. 113

Sol-  Based on first c.d = 7 14 21 28 35 

               Hence, Next missing number = 78 + 35 = 113.

Option e is correct.

Q8. -17  10  74 199 415 ?

a. 650

b. 668

c.758

d. 754

e. 766

Sol- Based on addition series of cube of 3, 4,5,6,7 respectively.

 =  27 64 125 216 343 

Missing no. Will be  = 415 + 343  = 758

Option c is correct

Q9. 2   1   1   1.5   3  ?

a. 8

b. 9.5

c.7.5

d.8.5

e.12

Sol- Series is based on multiplication started by × 0.5 , ×1 , × 1.5, ×2, × 2.5  so, ?  = 3 × 2.5  =7.50 

Option c is correct.

Q10. 12  26 81 328 1645 ?

a. 9981

b. 8281

c. 7321

d. 9871

e. 9978

Sol-  Series is based on multiplication followed by addition

× 2 +2 , × 3 +3 , ×4 +4 , ×5+5,,×6+6

So, ?  = 1645× 6 +6  = 9876

Option d is correct.

In case you missed a lot of articles of math and reasoning which will be very handy from exam perspective then kindly read the following links below to read all popular articles of this site.

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https://www.kumudmaths.in/2021/12/types-of-analogy-in-reassoning-for.html

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https://www.kumudmaths.in/2021/03/one-liner-previous-year-biology.html 

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