# TCS Papers: Sample Questions 29 - 30 of 502

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## Question number: 29

### Write in Short

At this series: 7,10,8, 11,9, 12… What number should come next?

### Explanation

• Here, first term of the series is 7.
• Second term of the series is 10, i. e. Difference between first two terms is
• Third term of the series is 8, i. e. Difference between third and second term is
• Fourth term of the series is 11, i. e. Difference between fourth and third term is
• Fifth term of the series is 9, i. e. Difference between fifth and fourth term is
• Sixth term of the series is 12, i. e. Difference between sixth and fifth term is
• Looking at the analogy, we can conclude that difference between two consecutive terms is alternating by + 3nd -2.
• So, difference between seventh term and sixth term should be -2.

• Hence, next term of the series will be 10.

## Question number: 30

### Write in Short

Find the next term of the following series.

1,4, 2,8, 6,24,22,88, ________

### Explanation

• First term of the series is 1.
• Second term of the series is 4, i. e.
• Third term of the series is 2, i. e.
• Fourth term of the series is 8, i. e.
• Fifth term of the series is 6, i. e.
• Sixth term of the series is 24, i. e.
• Seventh term of the series is 22, i. e.
• Eighth term of the series is 88, i. e.
• Looking at the analogy, Next term will be