# TCS Papers: Sample Questions 38 - 40 of 502

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## Question number: 38

» Aptitude

Short Answer Question▾

### Write in Short

Find the value of@@+25-++@16, where@denotes “square” and + denotes “square root”.

### Explanation

@denotes ‘square’ and + denotes ‘square root’

Here,@@+25 = =

And ++@16 = = = 4

Subtracting both the terms,

625 – 4 = 621

## Question number: 39

» Aptitude

Short Answer Question▾

### Write in Short

An athlete decides to run the same distance in 1/4th less time than she usually took. By how much percent will she have to increase her average speed?

### Explanation

- An athlete decides to run the same distance in th less time than she usually took.
- Let she took t time with s1 speed.
- To complete the distance in time, she needs s2 speed
- Distance covered by her will be same, i. e.

- So, we can say athelete needs to increase her speed by 33.33%.

## Question number: 40

» Aptitude

Short Answer Question▾

### Write in Short

Find the missing term: 7,9, 13, ? , 27,37.

### Explanation

- The given series is an arithmetic series.
- First term of the series is, a = 7
- Difference between the terms is 2n
- First term =
- Second term =
- Third term =
- Fourth term =
- Fifth term =
- Sixth term =
- Applying this pattern we are getting the exact series terms.
- So, series is 7,9, 13,19,27,37
- Missing term is 19.