PREVIOUS YEAR SOLVED PAPERS - November 2017 Paper 2
6. The Boolean function with the Karnaugh map
is:
- Option : A
- Explanation : To find the boolean function here we will use K-map Select neighboring Minterms as max as possible in powers of 2 ie 2,4,8 and so on.
Here we have selected group of minterms: First we will take 8 minterms group which will give us B. Now take 4 minterms group it will give us CD. Another 4 minterms group will give us AD. We have the expression B + CD + AD. which can be reduced as B + D ( A + C ) So, option (A) is correct.
7. The Octal equivalent of the binary number 1011101011 is :
- Option : B
- Explanation : First we will make pair of 3 bits from LSB : ie- 1 011 101 011 now convert these bits into decimal and that will be 1 - 1 011 - 3 101 - 5 011 - 3 so the answer will be 1353. So, option (B) is correct.
- Option : A
- Explanation : We know that ¬(P ↔ Q) = (¬P ↔ Q) = (P ↔ ¬Q) = ¬(¬P ↔ ¬Q) Only statement (I) and (II) are correct. So, option (A) is correct.
9. ‘ptrdata’ is a pointer to a data type. The expression *ptrdata++ is evaluated as (in C++) :
- Option : A
- Explanation : Here ++ (unary operator) have high precedence than * (unary operator). So ++ will be evaluated first then * will be in action. So A is the correct option. So, option (A) is correct.
10. The associativity of which of the following operators is Left to Right, in C++ ?
- Option : C
- Explanation : Array element access has left to right associativity in C++. So, option (C) is correct.
