AMCAT COMPUTER PROGRAMMING PREVIOUS QUESTIONS (PAPERS) – 4

Ques0. There is a new data-type which can take as values natural numbers between

(and including) 0 and 25. How many minimum bits are required to store this datatype.

Op 1: 4

Op 2: 5

Op 3: 1

Op 4: 3

Op 5:

Correct Op : 2

 

Ques1. A data type is stored as an 6 bit signed integer. Which of the following cannot

be represented by this data type?

Op 1: -12

Op 2: 0

Op 3: 32

Op 4: 18

Op 5:

Correct Op : 3

 

Ques3. A language has 28 different letters in total. Each word in the language is

composed of maximum 7 letters. You want to create a data-type to store a word of

this language. You decide to store the word as an array of letters. How many bits will

you assign to the data-type to be able to store all kinds of words of the language.

Op 1: 7

Op 2: 35

Op 3: 28

Op 4: 196

Op 5:

Correct Op : 2

 

Ques4. A 10-bit unsigned integer has the following range:

Op 1: 0 to 1000

Op 2: 0 to 1024

Op 3: 1 to 1025

Op 4: 0 to 1023

Op 5:

Correct Op : 4

 

Ques5. Rajni wants to create a data-type for the number of books in her book case.

Her shelf can accommodate a maximum of 75 books. She allocates 7 bits to the datatype.

Later another shelf is added to her book-case. She realizes that she can still use

the same data-type for storing the number of books in her book-case. What is the

maximum possible capacity of her new added shelf?

Op 1: 52

Op 2: 127

Op 3: 53

Op 4: 75

Op 5:

Correct Op : 1

 

Ques6. A new language has 15 possible letters, 8 different kinds of punctuation marks

and a blank character. Rahul wants to create two data types, first one which could

store the letters of the language and a second one which could store any character in

the language. The number of bits required to store these two data-types will

respectively be:

Op 1: 3 and 4

Op 2: 4 and 3

Op 3: 4 and 5

Op 4: 3 and 5

Op 5:

Correct Op : 3

 

Ques7. Parul takes as input two numbers: a and b. a and b can take integer values

between 0 and 255. She stores a, b and c as 1-byte data type. She writes the

following code statement to process a and b and put the result in c.

c = a + 2*b

To her surprise her program gives the right output with some input values of a and b,

while gives an erroneous answer for others. For which of the following inputs will it

give a wrong answer?

Op 1: a = 10 b = 200

Op 2: a = 200 b = 10

Op 3: a = 50 b = 100

Op 4: a = 100 b = 50

Op 5:

Correct Op : 1

 

Ques8. Prashant takes as input 2 integer numbers, a and b, whose value can be

between 0 and 127. He stores them as 7 bit numbers. He writes the following code

to process these numbers to produce a third number c.

c = a – b

In how many minimum bits should Prashant store c?

Op 1: 6 bits

Op 2: 7 bits

Op 3: 8 bits

Op 4: 9 bits

Op 5:

Correct Op : 3

 

Ques9. Ankita takes as input 2 integer numbers, a and b, whose value can be between

0 and 31. He stores them as 5 bit numbers. He writes the following code to process

these numbers to produce a third number c.

c = 2*(a – b)

In how many minimum bits should Ankita store c?

Op 1: 6 bits

Op 2: 7 bits

Op 3: 8 bits

Op 4: 9 bits

Op 5:

Correct Op : 2

 

Ques10. A character in new programming language is stored in 2 bytes. A string is

represented as an array of characters. A word is stored as a string. Each byte in the

memory has an address. The word “Mahatma Gandhi” is stored in the memory with

starting address 456. The letter ‘d’ will be at which memory address?

 

Op 1: 468

Op 2: 480

Op 3: 478

Op 4: 467

Op 5:

Correct Op : 3