Number Series

1.		In the series: 3, 15, _, 63, 99, 143,... What number should fill in the blank?

33

35

45

56

2.		Find the wrong term in the number series: 8, 13, 21, 32, 47, 63, 83

13

21

32

47

3.		In the series: 1, 3, 4, 8, 15, 27,... What number should come next?

64

44

50

52

4.		In the series: 3, 12, 27, 48, 75, 108,... What number should come next?

147

157

183

191

5.		Find the wrong term in the number series: 2, 5, 10, 17, 26, 37, 50, 64

5

17

37

64

6.		In the series: 625, 5, 125, 25, 25, _, 5,... What number should fill in the blank?

5

25

125

2.5

7.		In the series: 1, 4, 10, 22, 46,... What number should come next?

88

84

94

100

8.		Find the wrong term in the number series: 1, 3, 12, 25, 48, 75, 108

3

12

25

75

9.		In the series: 240, _, 120, 40, 10, 2,... What number should fill in the blank?

120

240

60

480

10.		In the series: 1, 1, 4, 9, 27, 16,... What number should come next?

32

64

128

81