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

1.  10C6

2.  -10C6

3.  -10C5

4.  10C5

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4
Correct Answer :

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

View Answer  
4
Correct Answer :

-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

View Answer  
4
Correct Answer :

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.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

The middle terms of

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

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

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


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

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

(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

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

(2n+1)n!/n!(n+1)!


Explanation :
No Explanation available for this question
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