Wrong Number Series Questions for Bank Clerk Mains PDF | Download Now

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Directions (01-10):  Find the wrong term in the following number series

1) 1, 13, 36, 85, 181, 373, 757

A.36

B.373

C.757

D.85

E.None of these

2) 9216, 2304, 576, 144, 36, 12

A.576

B.12

C.9216

D.144

E.None of these

3) 11, 22, 66, 130, 396, 792, 2376

A.396

B.130

C.2376

D.792

E.None of these

4) 675, 627, 580, 542, 509, 485, 472

A.580

B.509

C.627

D.485

E.None of these

5) 13, 20, 48, 112, 237, 453, 796

A.48

B.453

C.20

D.237

E.None of these

6) 85680, 10710, 1530, 255, 102, 12.75

A.12.75

B.255

C.1530

D.10710

E.102

7) 47, 240, 1446, 10120, 81040, 729369           

A.240

B.1446

C.10120

D.47

E.81040

8) 49, 51, 55, 63, 77, 102

A.51

B.63

C.77

D.102

E.55

9) 3, 2, 8, 73, 1170, 29254

A.2

B.73

C.8

D.1170

E.29254

10) 19, 30, 53, 89, 139, 205         

A.89

B.53

C.30

D.139

E.205

Answers :

1) Answer: A

1+12=13

13+24=37

37+48=85

85+96=181

181+192=373

373+384=757

Wrong number is 37

2) Answer: B

9216/4=2304

2304/4=576

576/4=144

144/4=36

36/4=9

Wrong number is 12

3) Answer: B

11*2=22

22*3=66

66*2=132

132*3=396

396*2=792

792*3=2376

Wrong number is 130

4) Answer: A

675-6*8=627

627-5*9=582

582-4*10=542

542-3*11=509

509-2*12=485

485-1*13=472

Wrong number is 580

5) Answer: C

13+2³=21

21+3³=48

48+4³=112

112+5³=237

237+6³=453

Wrong number is 20

6) Answer: E

85680 ÷ 8 = 10710

10710 ÷ 7 = 1530

1530 ÷ 6 = 255

255 ÷ 5 = 51

51 ÷ 4 = 12.75

The wrong number is 102

7) Answer: C

47 * 5 + 5 = 240

240 * 6 + 6 = 1446

1446 * 7 + 7 = 10129

10129 * 8 + 8 = 81040

81040 * 9 + 9 = 729369

The wrong number is 10120

8) Answer: D

The wrong number is 102

9) Answer: E

3 * 1² + (– 1) = 2

2 * 2² + 0 = 8

8 * 3² + 1 = 73

73 * 4² + 2 = 1170

1170 * 5² + 3 = 29253

The wrong number is 29254

10) Answer: E

19                    30                    53                    89                    139                  204

            11                    23                    36                    50                    65

                        12                    13                    14                    15

The wrong number is 205.

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