# TCS Papers: Sample Questions 172 - 174 of 502

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## Question number: 172

### Write in Short

If two pencils cost 8 cents, then how much do 5 pencils cost?

### Explanation

• More pencils, more total cost
• As number of pencils increases total cost of pencils also increases. So, they are in direct proportion.
• 2 pencils cost 8 cents then 5 pencils cost (? ), x cents

∴ x = 5 4

∴ x = 20

• 5 pencils cost 20 cents.

## Question number: 173

### Write in Short

In a certain format TUBUJPO is coded as STATION. The code of which string is FILTER?

### Explanation

• STATION is the code for TUBUJPO.
• Here, each alphabet is incremented by one position.
• Like,
• S = T, T = U, A = B, T = U, I = J, O = P, N = O
• We need to follow the same pattern for word FILTER.
• Incrementing each alphabet by one position, new code will be,
• F = G, I = J, L = M, T = U, E = F, R = S
• So, the code for string ‘FILTER’ will be ‘GJMUFS’.

## Question number: 174

MCQ▾

### Question

In a potato race, 20 potatoes are placed in a line of intervals of 4 meters with the first potato 24 meters from the starting point. A contestant is required to bring the potatoes back to the starting place one at a time. How far would he run in bringing back all the potatoes?

### Choices

Choice (4) Response

a.

2480

b.

1440

c.

2400

d.

1240

a.

### Explanation

Total number of potatoes = 20.

First potato is 24 meters from the starting point.

There is 4 meter distance between two potatoes.

A contestant is required to bring the potatoes back to the starting place one at a time.

So, for the first potato he has to travel.

For second potato he has to travel meters.

For third potato he has to travel meters.

For fourth potato he has to travel meters.

For fifth potato he has to travel meters.

For sixth potato he has to travel meters.

For seventh potato he has to travel meters.

For eighth potato he has to travel meters.

For ninth potato he has to travel meters.

Same way, for rest of the potatoes he needs to travel 120,128,136,144,152,160,168,176,184,192,200 meters.

This is an arithmetic series.

Here, first term, a = 48, d = 8, n = 20.

Sum of n terms

So, contestant will run 2480 meters to bring all the 20 potatoes.