# Assertion(A):If x2-5x+6

1.  Both A and R are true R is the correct explanation of A

2.  Both A and R are true and R is not correct explanation of A

3.  A is true but R is false

4.  A is false but R is true

4

Both A and R are true R is the correct explanation of A

Explanation :
No Explanation available for this question

# A student is given true from a chess board the probability that they have a side in common

1.  1/128

2.  1/16

3.  7/128

4.  3/128

4

7/128

Explanation :
No Explanation available for this question

# If x2-cx+d=0,x2-ax+b=0 have one common root and second equation has real roots then

1.  0

2.  ac

3.  a + c

4.  a - c

4

ac

Explanation :
No Explanation available for this question

# If G is the centroid of ΔABC where A = (a,0),B=(-a,0) and C=(b,c) then

1.  1

2.  2

3.  3

4.  4

4

3

Explanation :
No Explanation available for this question

# If the roots of the equation ax2+bx+c=0 is of the form k+1/k and k+2/k+1(k≠0),then (a+b+c)2 is equal to

1.  2b2-ac

2.  b2+4ac

3.  b2-4ac

4.  b2-2ac

4

b2-4ac

Explanation :
No Explanation available for this question

# The mean of binomial distribution is 2.4 and variance is 1.44 then the value of n is

1.  6

2.  4

3.  3

4.  2

4

4

Explanation :
No Explanation available for this question

# If both the roots of the equation x2-6ax+2-2a+9a2=0 exceed 3,then

1.  a>1

2.  a>11/9

3.  a>3/2

4.  a>5/2

4

a>11/9

Explanation :
No Explanation available for this question

1.  tanh (1/4)

2.  tanh2

3.  tanh4

4.  tanh8

4

tanh8

Explanation :
No Explanation available for this question

# The determinant

1.  x,y,z are in A.P

2.  x,y,z are in G.P

3.  x,y,z are in H.P

4.  xy,yz,zx are in A.P

4

x,y,z are in G.P

Explanation :
No Explanation available for this question

1.  -33

2.  -39

3.  27

4.  24

4