IMPORTANT NUMBER SERIES WITH SOLUTION FOR SSC,SBI,IBPS,UPSC,SSC CGL,CIVIL SERVICE EXAMS (SECTION 1)

 

The number series will be asked for 5 to 10 marks most of the competitive examinations like SSC, SBI, IBPS, UPSC, SSC CGL, CIVIL SERVICE EXAMS just go through the below given series.

This section will be asked for 5 marks in all competitive exams click here for section 2

1. 1, 2, 3, 6, 11, 20, 37, 68,?                  (ans 125)

(sum of previous two+ current face value means, 1+2=3, 1+2+3=6, same way 20+37+68= Ans 125 )

2. 9, 3, 24, 4, 9, 3, 36, 6, 9, 3, 30,?                   (ans 5)

(pattern is x*3,x*6 means,3*3=9,4*6=24, same way 3*3=9, 5*6=30 so

Ans 5 )

3. 44, 4.4, .88, .264, 0.1056, ?                    (ans 0.0528)

( pattern is x*.1,x*.2,x*.3. X*.4....Ans=0.5*0.1056 = 0.0528)

4. 81, 9^2, 162, 49, 7^2, 98, 25, 5^2, 50, 64, 8^2 ?                (ans 128 )

(81*2=162, 49*2=98, 25*2=50, similarly 64*2=Ans 128)

5. 1, 1, 2, 4 , 6, 36, 39, 1521, ?                           (ans 1525 )

(1+1=2 ,4+2=6 ,36+3=39 ,1521+4=Ans 1525)

6. 2, 8, 3, 27, 4, 64, 5, 125, 6, 216, ?                         (ans 7)

(See alternate numbers -> 2, 3, 4.Ans=7)

7. 3, 7, 10, 8, 4, 12, 0, 5, 5, 3, 2, ?                         (ans 5)

(Divide the 3 elements into one group 3+7=10,8+4=12,0+5=5,so 3+2=5 is the answer)

8. 2, 3, 6, 13, 28, ?                         (ans 59)

( (2*2)-1=3, (3*2)+0=6, (6*2)+1=13, (13*2)+2=28, so the answer is (28*2)+3=59 )

9. 38, 36, 76, 35, 114, 34, ?                     (ans 152)

( 38+38=76, 76+38=114, so Ans is 114+38= 152 )

10. 96, 64, 128, 192, 128, 256, 288, 192, ?                        (ans 384)

(Break like this (96, 64, 128,) (192, 128, 256,) (288, 192, ?)

96*2=192, 96*3=288 and 128*2=256 128*3=384 is the Ans)

11. 1370, 1320, 1070, -180, ?                          (ans -6430)

(difference -50, -250, -1250 and 50*5, 250*5, next Ans will be -1250*5=

-6250 and (-180-6250)=−6430 is the Answer )

12. 3, 2, 1, 4, 5, 4, 5, 1, 0, 6, 3, ?                      (ans 2)

( 3,( 2, 1) 4,( 5, 4) 5, (1, 0) 6, (3, 2) second term one less so ans = 2 )

13. 3, 7, 10, 8, 4, 12, 0, 5, 5, 3, 2, ?                 (ans 6)

( 3+7=10, 8+4=12, 0+5=5, 3+2=6 is the Ans )

14. 19, 24, 20, 25, 21, 26, ?                                (ans 22)

(add and subtract +5 and -4 respectively so the Ans is 22)

15. 11, 14, 12, 15, 13, 16, ?                         (ans 14)

(add and subtract +3 and -2 respectively so the Ans is 14)

16. 10, 2, 8, 2, 6, 2, ?                              (ans 4)

( 10-2=6, 8-6=4, 6-2=4 is the Ans)

17. 8, 9, 11, 14, 18, 23, ?                              (ans 29)

(go on adding +1, +2, +3, +4, +5, +6 …. so the Ans is 29)

18. 14, 2, 12, 4, 10, 6, ?                                 (ans 8 )

(14-2=12, 12-2=10, 10-2= 8 Ans is 8)

19. 7, 4, 6, 3, 4.5, 1.5, 2.25, ?                             (ans -0.75 )

(7-3=4 , 4+2= 6, 6-3=3, 3+1.5=4.5, 4.5-3=1.5, 1.5+0.75=2.25, 2.25-3=-0.75 )

20. 1, 1, 2, 4, 6, 36, 39, 1521, ?                           (ans 1525)

(1^1=1, 1+1=2, 2^2=4, 4+2=6, 6^6=36, 36+3=39, 39^39=1521, next 1521+4=1525 is the Ans)

21. 2, 9, 5, 49, 11, 169, ?                                 (ans 17)

(prime number series with alternative squares 2, 3^2,5, 7^2,11,13^2, next number is 17 )

22. 49, 7, 98, 16, 4, 48, 9, 3, 36, 25, 5, ?                    (ans 50)

( consider three number at a time 49, 7, 98 (7^7=49, 49*2=98)

16, 4, 48 (4^4=16, 16*2=48) similarly 25, 5, ? (5^5=25, 25*2=50)

23. 2, 6, 5, 14, 11, 26, 17, ?                                       (ans 38)

(it is prime number series 2,3*2,5,7*2,11,13*2,17,(19*2=38) )

24. 7, 0, 1, 8, 5, 12, 9, 26, 3, 23, 2,?                                (ans 28)

(7+0+1=8, 5+12+9=26, 3+23+2=28 )

25. 2, 3, 10, 15, 26, ?                                                (ans 35)

( (1^2)+1=2, (2^2)-1=3, (3^3)+1=10, (4^4)-1=15, similarly (6^6)-1=35 )