Black box Interview Questions Answers, HR Interview Questions, Black box Aptitude Test Questions, Black box Campus Placements Exam Questions

20 common asked question in every interview

Ques:- A man loses 20% of his money and after spending 70% of the remainder he is left with Rs. 270. Originally he had?

Recent Answer : Added by Pablo On 2022-08-14 16:45:55:

0,8x= y
y – 0,7y = 270

y= 270 / 0,3
y=900

0,8x=900
x=1125

Ques:- What do you think about The President?

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:- 6. Exp. in load testing?

Ques:- A sum of Rs. 64 is made up of 80 coins which are either 100 paise or 50 paise coins. How many coins are of 50 paise?

A. 22

B. 32

C. 42

D. 52

Recent Answer : Added by Avisikta On 2021-12-09 18:39:36:

Let’s say,

I have x coins of 50 paise and (80-x) coins of 100 paise,so the equation is like this ,
50x + (80-x)*100 = 64*100
x = 32
So ,I have 32 coins of 50 paise

Ques:- There are 9 coins. 8 of them are of 1 gm and 1 is of 2 grams. Find out the heavier coin in minimum number of weighing and how many weighing you need?

Ques:- Why you want the change?

Ques:- The perarl city express runs between chennai and _______

Ques:- Where are you staying? How many family members?

Ques:- minutes hand gains 45% at 11.20 p.m. so finally what is % of time gained by minutes hand

Recent Answer : Added by Admin On 2020-05-17 12:05:20:

its a tricky question and very funny too.
the answer is 45% only which is gained by the minute hand.

Ques:- The petrol tank of an automobile can hold g liters.If a liters was removed when the tank was full, what part of the full tank was removed?(a)g-a(b)g/a(c) a/g(d) (g-a)/a(e) (g-a)/g

Recent Answer : Added by Adithyan M On 2021-09-14 15:41:53:

a/g

Ques:- A man has a wolf, a goat, and a cabbage. He must cross a river with the two animals and the cabbage. There is a small rowing-boat, in which he can take only one thing with him at a time. If, however, the wolf and the goat are left alone, the wolf will eat the goat. If the goat and the cabbage are left alone, the goat will eat the cabbage. How can the man get across the river with the two animals and the cabbage?

Recent Answer : Added by Avaneesh Shukla On 2022-05-17 09:09:43:

take goat from one side and leave it another side and then come back another side and carry cabbage from one side leave it near goat and carry goat back to other side and then carry wolf leave it another side with cabbage come back to
goat side and carray goat to other side not all three are there on another side

Ques:- A reduction of 20% in the price of salt enables a lady to obtain 10kgs more for Rs.100, find the original price per kg?

Ques:- “An army travels 50 miles long at a constant rate. A courier standing at the rear moves forward and delivers the message to the first person and then turns back and reaches the rear of the army as the army completes 50 miles. Find the distance travelled by the courier.”

Ques:- Technical languages known

Ques:- Describe HRMS to a seven-year-old.

Recent Answer : Added by Viswa Priya On 2021-10-09 17:29:41:

Pen can’t be sharpened by sharpener
Pencil is only sharpened by sharpner
Likewise rigth man can only fill the rigth position so we have to select it. This is human resource recruiting.
In school teachers manage and motivate you to do your work.
The same is done to employees this is hrms

Ques:- The sum of money at compound interest amounts to thrice itself in 3 years. In how many years will it be 9 times itself?

Ques:- What do you like about computers?

Ques:- If water is called food, food is called drink, drink is called blue, blue is called red, red is called white and white is called brown, then what is the colour of “blood” ?

A. Blue

B. Red

C. Brown

D. White

E. Drink

Recent Answer : Added by Manga Ravikumar On 2022-03-09 16:45:58:

red

Ques:- in a mixture R is 2 parts and S is 1 part. In order to make S to 25% of the mixture how r is needed ? give the steps plz…..

Recent Answer : Added by Admin On 2020-05-17 12:04:05:

Its very simple..
consider the fraction of s in the mixture = 1/3
So if we add one more R the the fraction wil be = 1/4
Automaticaly S becomes 25% of the mixture

Ques:- Why you want to switch?

Ques:- You have not done your PG yet. This is not a drawback, but donâ€™t you think you should get a PG degree asap?

Ques:- How many experaice you have

Ques:- In a Bag the ratio of the no. of white balls to black balls is 1:2. If 9 grey balls are added the ratio of nos. of white, black and grey become 2:4:3. What is the number of black balls in the bag?

Recent Answer : Added by Shireen On 2022-09-15 16:37:01:

Ques:- Which person you admire most in your family and why?

Ques:- Ankaleshwar is famous for:

A. Coal mines

B. Gold mines

C. Iron ore

D. Petroleum

Recent Answer : Added by Rabiya On 2021-08-17 14:47:33:

Petroleum

Ques:- How do you feel about working weekends and night shifts?

Ques:- B – 1, B – 2 and B – 3 are three buses that travel from Mumbai to Delhi. Each bus starts at a different time and arrives at a different time. The digit in the bus number and the order of their departure of arrival is not the same. The first bus to leave Mumbai is the third bus to reach Delhi. Which is the first bus to leave Mumbai?

Recent Answer : Added by DK BOSS On 2021-07-21 15:26:32:

Ques:- Reena took a loan of Rs. 1200 with simple interest for as many years as the rate of interest. If she paid Rs. 432 as interest at the end of the loan period, what was the rate of interest?

Ques:- What three specific job positions do u target from the company.

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