y) is equal to

1. 1

2. 1/2

3. 1/3

4. 1/4

View Answer

Correct Answer :

1/3

Explanation :
No Explanation available for this question

The number of ways in which 13 gold coins can be distributed among three persons such that each one gets at least two gold coins is :

1. 6

2. 12

3. 24

4. 36

View Answer

Correct Answer :

Explanation :
No Explanation available for this question

The number of quadratic expressions with the coefficient drawn from the set (0, 1, 2, 3) is

1. 21

2. 36

3. 48

4. 64

View Answer

Correct Answer :

Explanation :
No Explanation available for this question

1. n/n+1

2. n2/(n+1)2

3. n4/(n+1)4

4. n6/(n+1)6

View Answer

Correct Answer :

n²/(n+1)²

Explanation :
No Explanation available for this question

The coefficient of x-n in (1+x)n(1+(1/x))n is:

1. 0

2. 1

3. 2n

4. 2nCn

View Answer

Correct Answer :

Explanation :
No Explanation available for this question

If the coefficient of rth term and (r + l)th term in the expansion of (1 + x)20 are in the ratio 1 : 2, then r is equal to:

1. 6

2. 7

3. 8

4. 9

View Answer

Correct Answer :

Explanation :
No Explanation available for this question

If

1. 1

2. 2

3. 3

4. 4

View Answer

Correct Answer :

Explanation :
No Explanation available for this question

The locus of the Z in the argand plane for which |z+1|2+|z-1|2=4, is a

1. straight line

2. pair of straight lines

3. circle

4. parabola

View Answer

Correct Answer :

circle

Explanation :
No Explanation available for this question

If θ is real, the modulus ofis:

1. 1/2 sec θ/2

2. 1/2 cos θ/2

3. sec θ/2

4. cos θ/2

View Answer

Correct Answer :

1/2 sec θ/2

Explanation :
No Explanation available for this question

If 1, ω, ω2 are the roots of unity, then (a + b)3+(aω + bω2)3+(aω2+bω)3 is equal to:

1. a3 + b3

2. 3(a3 + b3)

3. a2 - b3

4. a3 + b3 + 3ab

View Answer

Correct Answer :

3(a³ + b³)

Explanation :
No Explanation available for this question

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