# TCS Placement: Sample Questions 409 - 411 of 502

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## Question 409

Edit

### Write in Short

Short Answer▾Write the equivalent pointer expression for referring the same element a [i] [j] [k] [l] ?

### Explanation

`a[i] == ⚹(a+i)`

`a[i][j] == ⚹(⚹(a+i)+j)`

`a[i][j][k] == ⚹(⚹(⚹(a+i)+j)+k)`

`a[i][j][k][l] == ⚹(⚹(⚹(⚹(a+i)+j)+k)+l)`

## Question 410

### Question

MCQ▾On a 26 question test, 5 points were deducted for each wrong answer and 8 points were added for right answers. If all the questions were answered how many were correct if the score was zero.

### Choices

Choice (4) | |
---|---|

a. | 10 |

b. | 11 |

c. | 13 |

d. | 12 |

### Answer

a.### Explanation

- In a 26 question test, 5 points were deducted for each wrong answer and 8 points were added for right answers.
- All 26 questions are answered and resultant score is zero.
- We are asked to find the number of right answered questions.
- For option a) , 10 are correct, i.e..

16 are incorrect, i.e..

So,

- For option b) , 11 are correct, i.e..

15 are incorrect, i.e..

So,

- For option c) , 13 are correct, i.e..

13 are incorrect, i.e..

So,

- For option d) , 12 are correct, i.e..

14 are incorrect, i.e..

So,

- We can see among all options, for option a) only, resultant score is zero.

## Question 411

### Explanation

- Divide the given series into odd and even terms series.
- Odd term series: 3, 7,15, 31, …
- Even term series: 22,45, ? …
- Looking at the analogy, we can conclude that next term is one more than twice of its previous term.
- Like,

- Following the same pattern,
- So, missing term will be 91.