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Quantitative Aptitude-Practice set -Number Series- Set 15

Directions (1-5) Find the wrong term in the following series .

1)3,5,13,120,489,12231

A)13

B)120

C)489

D)12231

E)3

2)520,641,472,700,408,769

A)641

B)472

C)769

D)700

E)408

3)720,4320,865,3456,1152,2304

A)1152

B)4320

C)865

D)3456

E)720

4)69120,6912,1152,144,36,18

A)1152

B)144

C)36

D)69120

E)6912

5)83,81,90,62,127,10

A)90

B)62

C)127

D)83

E)10

Directions (6-10) What should come in place of the question mark (?) in the following number series ?

6)68 , ?,77, 104, 168,293

A)69

B)70

C)68

D)74

E)None of these

7)18,19.7,16.3,23.1,9.5, ?

A)36.5

B)36.8

C)36.7

D)36.9

E)None of these

8)2,5,12,27,58, ?

A)122

B)121

C)123

D)120

E)None of these

9)16,8,12,30,?,472.5

A)104

B)103

C)106

D)105

E)None of these

10)334,?,226,217,214,213

A)253

B)251

C)252

D)254

E)None of these

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Ans.

1.B)It should be 121 in the place of 120

The series is 3*12 + 2=5/5*2+3=13/13 * 32+4=121/

2.D)It should be 697 in the place of 700

520 +112=641/641-132=472/472 + 152=697

3.C)It should be 864 in the place of 865

720 *6=4320/4320÷5=864/….

4.A)it should be 864 in the place of 1152

69120 ÷10/6912 ÷8/……..

5.E)It should be I in place of 10

The series is 83-(13+1)=81/81 + (23+1)=90/………….

6.A-69)

The series is +cube of 1/+cube of 2/……

7.C-36.7)

The series is +1.7/-3.4/+6.8/

8.B-121)

The series is *2+1/*2+2/……….

9.D-105)

16*.5=8/8*1.5=12/………

10.-A-253)

The series is 334-81=253/253-27=226/226-9=217/………….

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