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L&T Placement Paper


Q1. Cost of an item is x. It's value increases by p% and decreases by p% Now the new value is 1 rupee, What is the actual value ?
Ans.(1000)/(1000-p*p).

Q2. A right circular cylinder and a cone are there. Base radius of cone is equal to radius of cylinder. What is the ratio of height to slant side if their volume are the same?

Q3. Distance between two poles is 50 meters. A train goes by 48 at a speed of kmph. In one minute how many poles will be crossed by the train ?

Q4. A pole seen from a certain distance at an angle of 15 degrees and 100 meters ahead by 30 degrees. What is the height of pole ?

Q5. For 15 people--each has to pay Rs.20.For 20 people--each has to pay Rs.18. For 40 people--how much has each to pay ?

Q6. If p=2q then q=r*r , if p-odd then q is even, Whether are is even or odd ?
a) first condition is sufficient
b) second condition is sufficient
c) both are sufficient
d) both are not sufficient

Technical

- Write a program to find factorial of a no Using recursion.

- What if we put negative no In that as input? extend the code with exception handling.

- Explain shortest path algorithm.

- Dijkshatra's and Bellmanford algos (no code, just overview).

- Windows server

- What is DHCP .

- What is Normalization, difference bet 3NF and BCNF.

- What is Key in database.