SBI PO Pre 2017 Shift 1 of 29-04-2017 Number series

Directions (1–5): What will come in place of the question mark (?) in each of the following series? 

Q1. 14,    8,    9,    14.5,    30,    ?

(a) 75

(b) 76

(c) 60

(d) 65

(e) None of these

Q2. 20,    29,    54,    103,    184,    ?,  

(a)310

(b)350

(c) 305

(d)310

(e) None of these

Q3. 7,    8,    18,    57,    ?,    1165

(a)250

(b)234

(c)230

(d)232

(e) None of these

Q4. 5,    7,    18,    47,    103,    ?

(a)195

(b)210

(c)200

(d)190

(e) None of these

Q5. 77,    85,    69,    101,    37,    ?

(a)180

(b)165

(c)170

(d)120

(e) None of these

ANSWER

S1. Ans.(b)

Sol. 

Pattern is ×0.5+1,×1+1,×1.5+1,×2+1,×2.5+1,

30×2.5+1=76

S2. Ans.(c)

Sol.

Pattern is +9,+25,+49,+81,+121

184+121=305

S3. Ans.(d)

Sol. 

Pattern is series is×1+1,×2+2,×3+3,×4+4

57×4+4=232

S4. Ans.(a)

Sol. 

103+92=195

S5. Ans.(b)

Sol. 

Pattern is +8,-16,+32,-64,+128

37+128=165