If a, b, c are real numbers such that a < b

1. 0 < a < 1

2. 1 < b < 3

3. 3 < c < 4

4. All of them

5. none of them

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Correct Answer :

All of them

Explanation :
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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

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Correct Answer :

Explanation :
No Explanation available for this question

16).a function y = f(n) is defined, for all natural numbers, as the sumof the digits of n. for a natural number m, which of the following could bethe value of f(f(m − f(m)))

1. 12

2. 15

3. 18

4. 21

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Correct Answer :

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

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Correct Answer :

none of these

Explanation :
No Explanation available for this question

abcd is a 4-digit number in base of 7 such that 2(abcd) = bcda (a, b 6= 0).Then a is

1. 1

2. 2

3. 3

4. Data insufficient

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Correct Answer :

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

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Correct Answer :

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

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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

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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

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Correct Answer :

Explanation :
No Explanation available for this question

here is a function f such that f(2) = 60 and −f(1) + f(2) − f(3) +f(4)−f(5).......+f(n) = nf(n), for all positive integers n > 1... find f(11)..

1. 60

2. 12

3. 10

4. 15

5. 11

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Correct Answer :

Explanation :
No Explanation available for this question

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