# TCS Papers: Sample Questions 1 - 4 of 502

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## Question number: 1

### Write in Short

G (0) =1 G (1) =-1 IF G (N) = 2* (G (N-1) ) - 3 (G (N-2) ) Then what is the value of G (4)?

### Explanation

Here,

We are asked to find the value of G (4).

Value of G (4) is 1.

## Question number: 2

### Write in Short

A shopkeeper bought a watch for Rs. 400 and sold it for Rs. 500. What is his profit percentage?

### Explanation

Cost price of the watch = 400

Selling price of the watch = 500

Gain = Selling price – Cost price

Gain =

Gain = 100

Gain (%) =

=

= 25%

Hence, profit in percentage will be 25.

## Question number: 3

### Write in Short

Difference between two numbers is 4 and their product is 17. Then find the sum of their squares?

### Explanation

Let the two numbers be x and y.

Difference between two numbers is 4 and their product is 17.

We can write, and

We know,

Sum of their squares is 50.