Number System

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131 Find the sum of first 37 odd numbers:

A
1369
B
1295
C
1388
D
1875

132 The sum of 5 consecutive even numbers A,B,C,D andE is 130. What is the product of A and E ?

A
720
B
616
C
660
D
672

133 Find out the missing term in the series 3, 6, 12, 24, 48, 96, …

A
192
B
182
C
186
D
198

134 Find out the missing term in the series 41, 40, 36, …, 11

A
35
B
27
C
29
D
30

135 Find out the missing term in the series 1, 9, 25, 49, 81, …

A
90
B
135
C
121
D
125

136 Find out the missing term in the series 2, 6, 14, 30, … , 126

A
62
B
63
C
73
D
95

137 Find out the missing term in the series 7, 8, 18, …, 232, 1165

A
84
B
42
C
57
D
36

138 Find out the missing term in the series 4, 10, 40, 190, 940, …, 23440

A
4690
B
2930
C
5140
D
3680

139 Find out wrong number in the series 12, 12, 18, 48, 180, 1080

A
180
B
12
C
18
D
48

140 Find out the missing term in the series 173, 152, 131, 110, … ?

A
86
B
80
C
88
D
89