Quantitative Aptitude Questions To Prepare For SBI PO Mains

Directions (1-5): What should come in place of the question mark (?) in the following number series?

1. 50, 60, 75, 97.5, ?, 184.275, 267.19875 (3)

120. 120.50
121. 130.50
122. 131.625
123. 124.25
124. None of these

2. 12, 15 , 36, ?, 480, 2415, 14508 (3)

1. 115
2. 109
3. 117
4. 121
5. None of these

3. 1, 2, 6, 21, 88, 445, ? (2)

1. 2230
2. 2676
3. 2580
4. 2670
5. None of these

4.  20, 21, 25, 34, 50, ?, 111 (4)

1. 70
2. 65
3. 60
4. 75
5. None of these

5.   600, 125, 30, ?, 7.2, 6.44, 6.288 (5)

1. 6
2. 10
3. 15
4. 12
5. None of these