# The middle term in the expansion of(x+1/x)10 is

1.  10C6

2.  -10C6

3.  -10C5

4.  10C5

4

10C5

Explanation :
No Explanation available for this question

# The middle term of(a/x-x/a)10 is

1.  252

2.  255

3.  -255

4.  -252

4

-252

Explanation :
No Explanation available for this question

# Middle term in the expansion of (2x-3/x)15is

1.  -15C72837x

2.  15C72837x

3.  -15C62837x

4.  15C62837x

4

15C62837x

Explanation :
No Explanation available for this question

# The middle term of(x+1/x)2n is

1.

2.  (2n)!/n!

3.  (3n)!/(n!)2

4.

4

Explanation :
No Explanation available for this question

# The middle terms of

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# The middle terms of (3x2+5/x2)11 are

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# The middle term of (1-3x+3x2-x3)2n is

1.  6nC3n(-x)3n

2.  2nCn(-x)3n

3.  5nC2n(-x)3n

4.  4nC3n(-x)3n

4

6nC3n(-x)3n

Explanation :
No Explanation available for this question

# If the middle term of (1+x)2n is 1.3.5...(2n-1)k/n! then k=

1.  (3x)n+1

2.  (2x)n+1

3.  (2x)n

4.  (3x)n

4

(2x)n

Explanation :
No Explanation available for this question

# The greatest coefficient of (1+x)10 is

1.  10!/5!6!

2.  10!/(5!)2

3.  10!/5!7!

4.  none

4

10!/(5!)2

Explanation :
No Explanation available for this question

# The greatest coefficient of (x/y+y/x)2n+1 is

1.  (2n+1)n!/n!(n+1)!

2.  2n!/n!(n+1)!

3.  n!/2n!(n+1)!

4.  none

4