# National defence university islamabad Interview Questions, Process, and Tips

Ques:- What’s the square root of 2000?
Ques:- Aman started a business investing Rs.70,000. Rakhi hoined him after six months with an amount of Rs.1,05,000 and Sagar joined them with Rs.1.4 lakhs after another six months. The amount of profit earned should be distributed in what ratio among Aman, Rakhi and Sagar respectively, 3 years after Aman started the business?
A. 7 : 6 : 10
B. 12 : 15 : 16
C. 42 : 45 : 56
D. Cannot be determined

b

Ques:- The perimeter of a semi circle is 144 cm then the radius is?

Perimeter of semi circular = πr+2r

Where r is radius , π = 22/7

πr+2r= 144 (given)

(22/7)r +2r = 144

22r+14r = 144*7 (multiply both sides by 7)

36r = 144*7

r= 144*7/36 = 28

Area =( 1/2)πr^2

Area=( 1/2 )*(22/7)*28*28

= 1232cm^2
Ans : area is 1232 cm^2

Ques:- A man sells two articles for Rs.3600 each and he gains 30% on the first and loses 30% on the next. Find his total gain or loss?
Ques:- A man came from usa , he was fat so he decided to walk to reduce fat in his body. So he daily starts walking at exactly at 3pm he walks at 4km/hr for some distance and then 3km/hr on inclined road while going up. And 6km/hr while coming dow?
Ques:- How would you handle a conflict between you and higher management?
Ques:- What goals have you achieved in your present career?And How did you plan to have achieved these goals?
Ques:- The number of sequences in which 7 players can throw a ball, so that the youngest player may not be the last is -.
Ques:- A fly is there 1 feet below the ceiling right across a wall length is 30m at equal distance from both the ends. There is a spider 1 feet above floor right across the long wall equidistant from both the ends. If the width of the room is 12m and 12m, what distance is to be traveled by the spider to catch the fly, if it takes the shortest path

42m

Ques:- CARTOSAT-2A is?
Ques:- Ram was travailing back from his friend house in his old ambassador. He could only travel along at a steady 30 miles per hr and managed a paltry 20 miles per litere of fuel. At the start of the journey he has placed exactly 10 litre of fuel into a tank. He knew though that the fuel tank lost fuel at the rate of half a liter per hhour. As ram arrived home the car stopped because it had run out of a fuel and h only just made it. How far was his friends house from rams. a.200 b.150 3.210 d170

Ans 200
that he will lost 1.5 ltr in an hour
so he will lost that 10 ltr in 10/1.5=6.67hour
distance travelled in 6.67 hour is=30*6.67=200 km

Ques:- Find the total no of 10 digits whose sum is 4.Â
Ques:- Here are infinite black and white dots on a plane. Prove that the distance between one black dot and one white dot is one unit?
Ques:- Sangeeta remembers that her father’s birthday was certainly after eight but before thirteenth of December. Her sister Natasha remembers that their father’s birthday was definitely after ninth but before fourteenth of December. On which date of December was their father’s birthday?
Ques:- A person walks 4 km towards west, then turns to his right to travel 9 km. He turns towards east and travels 12 km. Finally, he travels 3 km towards south. How far is he from the initial position (in km) ?

Ques:- A bag contains a total of 93 coins in the form of one rupee and 50 paise coins. If the total value of coins in the bag is Rs.56, find the number of 50 paise coins in the bag?

Let the number of one rupee coins in the bag be x.
Number of 50 paise coins in the bag is 93 – x.
Total value of coins
[100x + 50(93 – x)]paise = 5600 paise
=> x = 74

ANS = 74

Ques:- Do you have any blind spots?
Ques:- Choose a topic of your choice and speak about for a minute?
Ques:- A is a working partner and B is a sleeping partner in the business. A puts in Rs.15000 and B Rs.25000, A receives 10% of the profit for managing the business the rest being divided in proportion of their capitals. Out of a total profit of Rs.9600, money received by A is?

Explanation:

15:25 => 3:5

9600*10/100 = 960

9600 – 960 = 8640

8640*3/8 = 3240 + 960

= 4200

Ques:- Why people works on commission basis, where there is no fix income
Ques:- Given two billion distinct points on a plane such that no three are collinear. I color any half of them red and the Remaining blue. Is it always possible for you to join each red point to one (and Only one) blue point by means of line segments suc…
Ques:- If the area of circle is 616 sq cm thenWhat is its circumference?

Explanation:
Area of a circle =π*r*r
616=π*r*r
r*r= 616÷3.14
r*r =196
r =13
Circumference of a circle= 2*π*r
=2*π*13
=16*3.14=50.24

Ques:- You are given some denominations of coins in an array (int denom[])and infinite supply of all of them. Given an amount (int amount), find the minimum number of coins required to get the exact amount. What is the method called?
Ques:- If you have to start working at this project tomorrow, what would you do tonight
Ques:- Current salary and expected salary
Ques:- A family X went for a vacation. Unfortunately it rained for 13 days when they were there. But whenever it rained in the mornings, they had clear afternoons and vice versa. In all they enjoyed 11 mornings and 12 afternoons. How many days did they stay there totally?

Ques:- Will you be able to stay away from your hometown?
Ques:- In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. The duration of the flight is?