# In a simultaneous throw of two dice, the probability of A or B, if A=a sum of 11 points, B=an odd number of points on each die

1.  2/36

2.  1/4

3.  11/36

4.  1/36

4

11/36

Explanation :
No Explanation available for this question

# A magical die is so loaded that the probability of any face appearing is proportional to the number of points on its face. The probability of an odd number appearing is

1.  2/7

2.  3/7

3.  4/7

4.  5/7

4

3/7

Explanation :
No Explanation available for this question

# The 4th term in the expansion of [√x + (1/x)]12 is

1.  110x3/2

2.  220x3/2

3.  220x2

4.  110x2

4

220x3/2

Explanation :
No Explanation available for this question

# If the fourth term in the expansion of [px + (1/x)]x is 5/2, then (n,p)=

1.  (3, 1/2)

2.  (6, 1/2)

3.  (5, 1/2)

4.  (6,2)

4

(6, 1/2)

Explanation :
No Explanation available for this question

# The number of terms in the expansion of (1+x)21 is

1.  20

2.  21

3.  22

4.  24

4

22

Explanation :
No Explanation available for this question

# The middle term in the expansion of (1+x)2x is

1.  2xCx

2.  2xCn-1.xx+1

3.  2xCx-1.xx-1

4.  2xCx.xx

4

2xCx.xx

Explanation :
No Explanation available for this question

# If the coefficients of (r-1)th, rth and (r+1) terms in (x+1)x are in the ratio 1:3:5, then n=

1.  5

2.  6

3.  7

4.  8

4

7

Explanation :
No Explanation available for this question

# In the expansion of (1+x)x, the binomial coefficient of 3 consecutive terms are respectively 220, 495 and 792, then n=

1.  4

2.  8

3.  12

4.  16

4

12

Explanation :
No Explanation available for this question

# Coefficient of x4 in (1+x+x2+x3)11 is

1.  55

2.  605

3.  990

4.  1120

4

990

Explanation :
No Explanation available for this question

1.  n.2n

2.  n.2n-1

3.  (n+1)2n

4.  (n+1)2n-1

4