Hello Aspirants. Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in** Number Series**, which is common for all the competitive exams. We have included Some questions that are repeatedly asked in bank exams !!!

**63, 66, 138, 423, 1704**

**34, a, b, c, d…Find the value of C**

A)327

B)80

C)249

D)256

**C)249**

Explanation :

63*1+3 = 66 34*1+3 = 37

66*2+6 = 138 37*2+6 = 80

138*3+9 = 423 80*3+9 = 249

423*4+12 = 1704

**173, 86.5, 216.25, 72.08,252.3**

**234,p,q,r,s,t……..Find the value of Q**

A)237.8

B)292.5

C)342.9

D)126.8

**B)292.5**

Explanation :

173÷2 = 86.5 234÷2 = 117

86.5*2.5 = 216.25 117*2.5 = 292.5

216.25÷3 = 72.08

72.08*3.5 = 252.3

**564, 221, 437, 312…**

**1234,m,n,o,p……..Find the value of O**

A)876

B)956

C)1029

D)918

**D)918**

Explanation :

564 – 343 = 221……1234 – 343 = 891

221+ 216 = 437 891+216 = 1107

437 – 125 = 312 1107 – 125 = 982

982 – 64 = 918

**132,182,240, 306**

**992,a,b,c,d…..Find the value of c**

A)1879

B)1290

C)1450

D)1260

**D)1260**

Explanation :

121+11 = 132 961+31 = 992

169+13 = 182 1089+33 = 1122

225+15 = 240 1225+35 = 1260

289+17 = 306

**987, 207.4, 2069, 423.8…….**

**145,l,k,j…..Find the value of l**

A)45

B)39

C)289

D)165

**B)39**

Explanation :

987÷5+10 = 207.4 145÷5+10 = 39

207.4*10-5 = 2069

2069÷5+10 = 423.8

**5, 7.5, 22.5, 101.25**

**93,a,b,c,d……..Find the value of d**

A)1289.6

B)1578.5

C)1987.6

D)1883.25

**D)1883.25**

Explanation :

5*1.5 = 7.5 93*1.5 = 139.5

7.5*3 = 22.5 139.5*3 = 418.5

22.5*4.5 = 101.25 418.5*4.5 = 1883.25

**216, 215,214,210,202**

**63,r,s,t,u,….Find the value of U**

A)83

B)90

C)49

D)57

**C)49**

Explanation :

216 – 1^2 = 215 63 -1^2 = 62

215 -1^3 = 214 62-1^3 = 61

214 -2^2 = 210 61-2^2 = 57

210 -2^8 = 202 57 – 2^3 = 49

**7,7,14,42,126,252,252**

**123,u,v,w,x,y,z…..Find the value of x**

A)2865

B)1654

C)3245

D)2214

**D)2214**

Explanation :

7*1 = 7 123*1 = 123

7*2 = 14 123*2 = 246

14*3 = 42 246*3 = 738

42*3 = 126 738*3 = 2214

126*2 = 252

252*1 = 252

**147,153,165,189,237**

**652,a,b,c,d…….find the value of d**

A)954

B)742

C)987

D)876

**B)742**

Explanation :

147+6 = 153 652+6 = 658

153+12 = 165 658+12 =670

165+24 =189 670+ 24 = 694

189+48 =237 694+48 = 742

**754,564,190,543,327,216**

**189,a,78,145,65,b…………find the value of a**

A)111

B)123

C)134

D)254

**A)111**

Explanation :

754 – 564 = 190 189-78 = 111

543 – 327 = 216

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