Dr Raju's Institute of Graduate Studies Abroad

[Quant.Database]

Quant:

1. Given the range of one set as 16.2 and range of another set as 10.4. What is the range, if both sets are combined?
A. 10.4
B. 16.2
C. 20.8
D. 26.6
E. Cannot be determined.
(Similar to this)


2. Given that there are ‘n’ numbers of students where they are arranged in 6 rows. A teacher wants to remove one row, so that the students are equally distributed to remaining 5 rows. Find, how many students are there now in each row?
A. 10
B. 12
C. 30
D. 48
E. 60
(Similar to this)


3. The average of a set: {x1, x2, x3, x4, x5} is given as ‘m’ and average of set: {x1-m, x2-m, x3-m, x4-m, x5-m} is given as ‘p’.
Col A: m
Col B: p


4. If a watch running for 15 hours is 3mins late, then
Col A: The number seconds it is late, if it runs for 5 hours
Col B: 36
(Similar to this)


5. Given an equation 3y + 4x = 7. Which of the following is possible?
A. y = 4/3x + 7/3
B. y = -4/3x + 7/3
C. y = -3/4x + 7/4
& so on…….
(Similar to this)


6.

Given equation of the line AB as x + y – 4 = 0.
Col A: OA
Col B: OB


7. If a flight travels ‘x’ miles in ‘t’ hours, then
Col A: The time taken in minutes to travel 900 miles
Col B: 15t/x
(Similar to this)


8. Given a certain hospital is opened only in last week. If 10 people travel through bus to hospital, then what is the probability that at least two people travel on the same day?
A. 2/7
B. 3/7
C. 4/7
D. 5/7
& so on……


9. Given ‘n’ as a positive integer
Col A: (n + 0.937) (0.387)
Col B: (n + 0.387) (0.937)


10.

Col A: Area of triangle ABC
Col B: 2
And few previous database questions appeared

[maheshreddy]

1. Given the range of one set as 16.2 and range of another set as 10.4. What is the range, if both sets are combined?
A. 10.4
B. 16.2
C. 20.8
D. 26.6
E. Cannot be determined.
(Similar to this)

ANS...???????



2. Given that there are ‘n’ numbers of students where they are arranged in 6 rows. A teacher wants to remove one row, so that the students are equally distributed to remaining 5 rows. Find, how many students are there now in each row?
A. 10
B. 12
C. 30
D. 48
E. 60
(Similar to this)

ANS...let there are n students ..at first n/6 students for each row so when one row is removed it is n/5 members for each row ....n/6+k=n/5....more over n should be a multiple of 30...



3. The average of a set: {x1, x2, x3, x4, x5} is given as ‘m’ and average of set: {x1-m, x2-m, x3-m, x4-m, x5-m} is given as ‘p’.
Col A: m
Col B: p

ans:---D
_________________
MAHESH REDDY MALLELA

[dev]

1. E
2. Mul of 30
3. D
4. A
5. B
6. C
7. A
8. B
9. B
10. B

CORRECT IT IF THERE IS ANY WRONGS

[rajat.tiet]

Hey dev,

Can you please give me the explanation for questions 2 and 8th?

I have got the other ones right according to your answers..

Thanks... waiting for ur reply soon...

[dev]

2nd question has 6 rows . therefore the no. of students are a multiple of six. now if we arrange them exactly in 5 rows then the students are also to be multiples of 5 . in that case the total students are a multiple of both 5 and 6 . So the answer has to be a multiple of 30.

[rajat.tiet]

Thanks dev..

In that case the answer would be 30 for the 2nd question.

What about he 8th one?

[dev]

Dear Rajat

The answer for 8 . is 1 not 3/7......

At least 2 means that min 2 or more. since 10 people are there the chance of excedding 2 peoplein a 7 days period is max. so probablity is 1.

Hope this answers your query.

[preeths]

it is not asked in the question that how many students are there over all.... it is asked that how many students are there in the newly formed row?? so... if there are 30 students there overall, arrange them in 6 rows... for each row 5 students then remove one row and add to all the rows in equal quantity i.e,(5/5) 1 to all rows... so the answer would be 6 or 12