Subject: Maths, asked on 13/5/18

## Solve this:

Subject: Maths, asked on 13/5/18

## Q. From a group  of 7 men and 6 women , 5 persons  are to be selected to form a committee so that atleast 3 men are there on the committee . In how many can it be done ?

Subject: Maths, asked on 8/5/18

## Q.  Let tm  denote the sum of mth power of the reciprocals of the roots of the equation                                           1 + x / 1 !  +  x2/2!  + ..................xn/n!     show that t2 = t3 = .....tn = 0  and tn+1  = $\frac{1}{n!}$

Subject: Maths, asked on 27/4/18

## ncx=ncy and , x not equal to y, Then x+y=?

Subject: Maths, asked on 18/4/18

## plzz provide answer for 1,2,3

Subject: Maths, asked on 31/3/18

## Please explain the marked step .

Subject: Maths, asked on 31/3/18

## Please explain the marked step for this question: Marked step: $\frac{5!}{\left(4-r\right)!}=\frac{6×5!}{\left(5-r+1\right)\left(5-r\right)\left(5-r-1\right)!}$

Subject: Maths, asked on 30/3/18

## An 8 oared boat is to be manned by 8 men of whom 2 can row on bow side and one can row on stroke side. The number of ways in which the crew can be arranged

Subject: Maths, asked on 30/3/18

## Q.17 Out of 5 apples , 10 mangoes and 15 oranges , the number of ways distributing 15 fruits each to two persons is (a) 56 (b) 64 (c) 66 (d)72 Q.18 The number of divisors of the form 4n+ 1 , n$\ge$0 of the number 1010  1111  1313  is   (a) 750 (b) 840  (c) 924  (d) 1024

Subject: Maths, asked on 29/3/18

## Questions no 67. A bag contains 3 black, 4 white and 2 red balls, all the balls being different. The number of selections of at most 6 balls containing balls of all the colours is

Subject: Maths, asked on 26/3/18

## Number of rectangles in figure shown, which are not squares is  (a) 159                   (b) 160                      (c) 161                     (d) None

Subject: Maths, asked on 23/3/18

## Plz ans soon.. 30. In how many ways can 5 girls and 3 boys be seated in a row so that no two boys are together.

Subject: Maths, asked on 23/3/18

## Pls solve this Illustration 6.93 Find the number of ways in which six persons can be seated at a round table, so that all shall not have the same neighbors in any two arrangements.

Subject: Maths, asked on 22/3/18

## Pls solve this Illustration 6.86 Find the number of ways in which A A A B B B can be placed in the squares of Fig. 6.14 as shown, so that no row remains empty. Fig. 6.14

Subject: Maths, asked on 12/3/18

## Pls solve this qs There are 10 lamps in a hall. Each one of them can be switched  on independently. What is the probability that the hall will be  illuminated for random selection of any one position of all the  switches?

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