A quadratic with integral coefficients has two distinct positive integersas roots, the sum of its coefficients is prime and it takes the value -55 forsome integer. The sum of the roots is

1.  32

2.  20

3.  24

4.  none of these

View Answer  
4
Correct Answer :

20


Explanation :
No Explanation available for this question

If the integers m and n are chosen at random from integers from integers1 to 100 with replacement, then the probability that a no. of the form7m + 7n is divisible by 5 equals

1.  1/2

2.  1/4

3.  1/8

4.  1/16

5.  none of these

View Answer  
5
Correct Answer :

none of these


Explanation :
No Explanation available for this question

If a2b3c = 256/27 find min value of a + b + c, given a, b, c are positivereal nos

1.  10

2.  11

3.  12

4.  13

5.  14

View Answer  
5
Correct Answer :

14


Explanation :
No Explanation available for this question

From four positive real nos a, b, c and d, 4 distinct combination of sumof three numbers are formed S1, S2, S3 and S4. IF abcd = 5. FInd the minvalue of S1S2S3S4

1.  40

2.  135

3.  1080

4.  405

5.  1280

View Answer  
5
Correct Answer :

405


Explanation :
No Explanation available for this question

Let the cost of 3 apples and 4 oranges be Rs 21. If Anjli can buy atmost 4 apples and 3 oranges with Rs 20 and no more fruit, then the maximumamount that could be left with Anjli will be about

1.  Rs 1

2.  Rs 1.25

3.  Rs 1.50

4.  Rs 2

5.  Rs 2.25

View Answer  
5
Correct Answer :

Explanation :
No Explanation available for this question

In a classroom there are 14 students seated in 3 rows of 5 chairs. Theplace at the centre of the room is unoccupied. A teacher decides to reassignthe seats such that each student will occupy a chair adjacent to his/herpresent one (i.e. move one desk forward, backward, right or left). In howmany ways can this reassignment be done

1.  1

2.  13

3.  0

4.  13

5.  None of these

View Answer  
5
Correct Answer :

Explanation :
No Explanation available for this question

aksa is 990 km to the west of baksa and lies in different time. boatscruise at the speed of 50 km per hour in both directions, but their speed is affected by steady current flowing in direction of aksa to baksa . the localtimings of departure and arrival of to to and fro boats are given asdeparture ———————–arrival(next day)city ———— time ————– city ———– timeaksa ————- 10 am———– baksa ——— 5 ambaksa ———— 10 pm ———-aksa ———– 7 pmThen what is the speed of the current in km per hour

1.  1

2.  2.5

3.  3

4.  5

5.  cant be determined

View Answer  
5
Correct Answer :

1


Explanation :
No Explanation available for this question

How many real r are there such that the roots of x2 + rx + 6r = 0are both integers

1.  5

2.  9

3.  10

4.  18

5.  none of these

View Answer  
5
Correct Answer :

Explanation :
No Explanation available for this question

A number when divided by a divisor leaves a remainder of 24. When twice the original number is divided by the same divisor, the remainder is 11. What is the value of the divisor

1.  13

2.  59

3.  35

4.  37

View Answer  
4
Correct Answer :

37


Explanation :
No Explanation available for this question

The product of 4 consecutive even numbers is always divisible by:

1.  600

2.  768

3.  864

4.  384

View Answer  
4
Correct Answer :

384


Explanation :
No Explanation available for this question
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