Number Series Questions for SBI Clerk, Syndicate Bank PO and Canara Bank PO 2018 Set-3

Direction (Q.1-5): What will come in place of the question mark (?) in the following number series?

Q.1 8, ?, 77, 234, 706, 2126

(A) 16

(B) 20

(C) 25

(D) 28

(E) 32

 

Q.2 1.2, 5.2, 20.2, 85.8, 435, ?

(A) 1026

(B) 1259

(C) 1695

(D) 2617

(E) None of these

 

Q.3 32, ?, 16, 32, 128, 1024

(A) 24

(B) 20

(C) 15

(D) 8

(E) None of these

 

Q.4 232, 172, 120, 76, ?, 12

(A) 40

(B) 45

(C) 56

(D) 50

(E) None of these

 

Q.5 1417.5, 315, 90, ?, 24, 48

(A) 40

(B) 36

(C) 54

(D) 45

(E) None of these

 

Answer 1. (C) 25

Explanation:

Pattern Series
8 8
8 × 3 + 1 25 (✓)
25 × 3 + 2 77
77 × 3 + 3 234
234 × 3 + 4 706
706 × 3 + 5 2123

Answer 2. (D) 2617

Explanation:

Series Pattern
1.2 1.2
1.2 × 2 + 3 5.4
5.2 × 3 + 4 20.2
20.2 × 4 + 5 85.8
85.8 × 5 + 6 435
435 × 6 + 7 2617 (✓)

Answer 3. (E) None of these

Explanation:

Pattern Series
32 32
 32 × 0.5 16 (✓)
16 × 1 16
16 × 2 32
32 × 4 128
128 × 8 1024

Answer 4. (A) 40

Explanation:

Series : 232 172 120 76 40 12
Pattern : 60 52 44 36 28
8 8 8 8

Answer 5. (B) 36

Explanation:

Series Pattern
1417.5 1417.5
1417.5 ÷ 4.5 315
315 ÷ 3.5 90
90 ÷ 2.5 36 (✓)
36 ÷ 1.5 24
24 ÷ 0.5 48

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