If the sum of odd terms and the sum of even terms in the expansion of (x+a)n are p and q respectively then p2+q2=

1.  (x2+a2)n

2.  (x2-a2)n

3.  1/2[(x+a)2n+(x-a)2n]

4.  1/2[(x+a)2n-(x-a)2n]

View Answer  
4
Correct Answer :

1/2[(x+a)2n+(x-a)2n]


Explanation :
No Explanation available for this question

The sum of numbers formed by talking all the digits 2,4,6,8 is

1.  123320

2.  13220

3.  133320

4.  None of these

View Answer  
4
Correct Answer :

133320


Explanation :
No Explanation available for this question

If the sum of odd terms and the sum of even terms in the expansion of (x+a)n are p and q, then 4pq=

1.  (x+a)2m-(x-a)2n

2.  (x2-a2)n+(x+a)2n

3.  (x2-a2)n+(x-a)2n

4.  (x2+a2)n+(x-a)2n

View Answer  
4
Correct Answer :

(x+a)2m-(x-a)2n


Explanation :
No Explanation available for this question

The sum of numbers formed by talking all the digits {1,3,5,7,9} is

1.  56,67,850

2.  63,65,458

3.  66,66,600

4.  76,61,523

View Answer  
4
Correct Answer :

66,66,600


Explanation :
No Explanation available for this question

The sum of all possible numbers greater than 2000 formed by using the digits 2,3,4,5 is

1.  93324

2.  96324

3.  92324

4.  36680

View Answer  
4
Correct Answer :

93324


Explanation :
No Explanation available for this question

The sum of all 4 digited that can be formed, using the digits 1,2,4,5,6 without repetition is

1.  479952

2.  497952

3.  545958

4.  547598

View Answer  
4
Correct Answer :

479952


Explanation :
No Explanation available for this question

The sum of all four digited that can be formed, using  the digits 0,2,4,7,8 without repetition is

1.  479952

2.  497952

3.  545958

4.  547598

View Answer  
4
Correct Answer :

545958


Explanation :
No Explanation available for this question

The coefficient of xp in the expansion of (x2+1/x)2n is

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

If a1,a2, a3, a4 are the coefficients of 2nd, 3rd, 4th and 5th terms respectively in (1+x)n then a1/a1+a

1.  a2/a2+a3

2.  2a2/a2+a3

3.  a3/a2+a3

4.  2a3/a2+a3

View Answer  
4
Correct Answer :

2a2/a2+a3


Explanation :
No Explanation available for this question

The sum of numbers formed from the digits 2,3,4,5 is

1.  1,03,124

2.  93,324

3.  78,456

4.  1,15,576

View Answer  
4
Correct Answer :

1,03,124


Explanation :
No Explanation available for this question
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