### 2. What value should come in place of question mark (?) in the following number series?
723, 505, 335, 207, ?

### 3.
What value should come in place of question mark (?) in the following number series?
132, 132, 134, 140, 152, ?

### 4.
What value should come in place of question mark (?) in the following number series?
840, 960, 1120, 1344, ?

### 5.Look at this series: 31, 29, 24, 22, 17, ... What number should come next?

### 6. Find the wrong term in the following number series.
7, 8, 18, 57, 232, 1160

### 7.
Look at this series: 1.5, 2.3, 3.1, 3.9, ... What number should come next?

### 8. Find the wrong term in the following number series.
28, 13, 28, 98, 490, 3185, 25480

### 9.
What value should come in the place of question mark in the given series?
11, 19, 65, 259, 1161, ?

### 10.What value should come in the place of question mark in the given series?
19, 17, 30, 82, 312, ?