NUMBER SERIES FOR ALL COMPETITIVE EXAM 8 OCTOBER 2016

Daily quiz 0 Comments
Number series

NUMBER SERIES

1. 11, 11, 13, 31, __, 71

     Ans:- 17

Daily Visit GK on myshort.in

     Solution:- Next value is interchange of previous value

2.  1000, 999, 995,­ __, 970, 945

     Ans:- 986

     Solution:- 1000-1²= 999 , 999-2² = 995,….,995-3²=986

3.  2 , 7, 17 , 34 , __ , 97

     Ans:- 60

     Solution:- 2 + (2²+1)= 7 , 7 + (3²+1)= 17,…, 34 + (5²+1)= 60

4.  50 , 100 , 100 , 66.6 , __ , 13.25

     Ans:- 33.33

     Solution:-   50÷.50 = 100 , 100 ÷ (.50+.50) = 100 , 100 ÷ (1+.50) = 66.6

      66.6 ÷ (1.50+.50) = 33.3

5.  1 , 2 , __ , 5 , 7 , 11

      Ans:- 3

      Solution:- In series prime number

 

6.  1 , 5 , 14 , 30 , __ , 121

     Ans:- 85

     Solution:- 1+0 =1 , 1 + 2² =5,….,30 + 5² = 85

7.  20 , 10 , 10 , 20 , 40 , __

     Ans:- 320

     Solution:- 20 × ½ = 10, 10 ×(½+½) = 10,…,40 × (4+4) = 320

8.  1728 , 1000 , __ , 216 , 64 , 8

     Ans:- 512

     Solution:- 12³, 10³ , 8³….

9.  1 , 4 , 9 , 25 , 49 , __

     Ans:- 121

     Solution – square of prime number

      1² , 2² , 3²,…., 11²

10.  500 , 490 , 470 ,  440 , __ , 350

       Ans:- 400

       Solution:- 500 –(2×5) = 490, 490- (2×10) = 470,…,440-(2×20) = 400

 

Buy online Rajasthan gk book Railway JE CBT REET PAtwari Book SSC CGL Clerk GD Book Buy online Rajasthan gk book Railway JE CBT REET PAtwari Book SSC CGL Clerk GD Book

share..Share on Facebook0Share on Google+0Tweet about this on TwitterShare on LinkedIn0