# Aptitude [Tata Infotech Placement]: Sample Questions 15 - 17 of 41

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## Question 15

Aptitude

### Explanation

- Dividing the given series into two parts of odd and even terms,
- Odd term series: 10,12, 14, …
- Even term series: 15,17, 19, …
- Next term will follow the same sequence followed by odd term series.
- Here, each term is incremented by four numbers, i.e.. Difference between two consecutive terms is + 2.
- So, next term will be

## Question 16

Aptitude

### Explanation

- Divide the given series into two parts of odd and even terms.
- Odd term series: 3,4, 5, …
- Even term series: 18,24, 30, …
- Next term will follow the same pattern of odd term series.
- Here, each term is incremented by one digit number, i.e.. difference between two consecutive numbers is + 1.
- So, next term will be

## Question 17

Aptitude

### Explanation

- In the given series first two terms are 25 and 25.
- Third and fourth terms of the series are 22 and 22. Difference between 25 and 22 is -3.
- Fifth and sixth terms of the series are 19 and 19. Difference between 22 and 19 is -3.
- Same way, difference between sixth and seventh term should be -3.
- So, seventh term will be
- Next term of the series is 16.