Sify Placement Paper -: Quantitative Questions With Answers

Sify Previous Years Solved Sample Placement Papers

1. What would be the Prefix notation for the given equation? A+(B*C)
   (a) +A*CB
   (b) *B+AC
   (c) +A*BC
   (d) *A+CB
   Answer: (c)
   Explanation: Reverse the equation or scan from right to left. Apply the infix-to-postfix algorithm. Inside the brackets, the result is CB*, and outside the brackets, it is A+. Reversing gives +A*BC.

2. What would be the Prefix notation for the given equation? (A*B)+(C*D)
   (a) +*AB*CD
   (b) *+AB*CD
   (c) **AB+CD
   (d) +*BA*CD
   Answer: (a)
   Explanation: Reverse the equation or scan from right to left. Apply the infix-to-postfix algorithm. Brackets evaluate to DC* and BA*, resulting in +*AB*CD after reversal.

3. What would be the Prefix notation for the given equation? A+B*C^D
   (a) +A*B^CD
   (b) +A^B*CD
   (c) *A+B^CD
   (d) ^A*B+CD
   Answer: (a)
   Explanation: Reverse the equation or scan from right to left. Apply the infix-to-prefix algorithm. The order of precedence is +* and ^. The reversed expression evaluates to +A*B^CD.

4. A keyboard is this kind of device—
   

   (A) black

   (B) input

   (C) output

   (D) word Processing

   (E) None of these

   Answer: (B) input
5. IT stands for—
   

   (A) information Technology

   (B) integrated Technology

   (C) intelligent Technology

   (D) interesting Technology

   (E) None of these

   Answer: (A) information Technology
6. Which of the following refers to the fastest, biggest and most expensive computers?
   

   (A) Personal Computers

   (B) Supercomputers

   (C) Laptops

   (D) Notebooks

   (E) None of these

   Answer: (B) Supercomputers
7. What is antonym for INVEIGLE
   

   A. Induce

   B. encounter

   C. Beguile

   D. persuade

   Answer: B
8. What is antonym for VICIOUS
   

   A. depraved

   B. Moral

   C. profligate

   D. Iniquitous

   Answer: B
9. 3/4 of 432=?
   

   A. 316

   B. 340

   C. 324

   D. 232

   Answer: C
10. If the radius of the circle is ½ than its area
    

    A. Remains same

    B. Become double

    C. Become half

    D. Become quarter

    Answer: D
11. 0.027/90=
    

    A. 0.03

    B. 0.00003

    C. 0.0003

    D. 3

    Answer: C
12. Noman’s test score is 96,97,86,98 and 92. What would he need on his next test to have an average of 94
    

    A. 100

    B. 95

    C. 90

    D. 92

    Answer: B
13. What is the percent profit made on the sale of 1000 shares of poultry stock bought at Rs 10 per share and sold at Rs 12 per share
    

    A. 2%

    B. 25%

    C. 41%

    D. 20%

    Answer: D