A girl has to make pizzas with different toppings. There are eight different toppings. In how many ways can she make pizzas with two different toppings?

• there are 8 toppings.
  she has to select 2 out of 8 toppings.
  no of ways= 8c2
• 11 years agoHelpfull: Yes(41) No(4)
• The possible pairs that can be formed are (1,2);(1,3);(1,4);(1,5)...(7,8). The other way (2,1);(3,1)...(8,7) is not possible here because we are asked to form the pizzas with 2 different toppings.. so possible answer is 8c2=28
• 11 years agoHelpfull: Yes(8) No(0)
• Total ways=8p2=8*7=56
• 11 years agoHelpfull: Yes(6) No(8)
• formula to find....n!/(n-c)!
  Where n=8 and c=2
  (8*7*6*5*4*3*2*1)/(6*5*4*3*2*1)=56
• 11 years agoHelpfull: Yes(1) No(6)
• Now suppose you wanted to display one topping in the middle and the other around the edge, you would be considering arrangements and the answer would be
  P(8, 2) = 8!/6!
  = 8*7
  = 56
  
  However, suppose that you wish to sprinkle toppings randomly over the pizza base. Since it does not matter what the arrangements are, the number of ways is
  C(8, 2) = 8! / 2!*6!
  = 8*7 / 2*1
  = 56/2
  = 28
• 11 years agoHelpfull: Yes(1) No(2)
• @Deblina Manna or anyone Plz send me d all solutions of open sessame paper, & also TCS new patern if u hv. My mail id- rimjhimbothra@gmail.com, its too urgent, coming 19th nov... Plz help
• 11 years agoHelpfull: Yes(0) No(0)
• please anyone send me all solutions of open sessame paper, & also TCS new patern and previous years solved paper. vry urgent coming on 13th..... plzzzz ..... my mail id is adityasinha4u@gmail.com
• 11 years agoHelpfull: Yes(0) No(3)
• please anybody send me latest tcs pattern question and their solution at ece.joymazumdar24@gmail.com...tcs is coming on 13th nov
• 11 years agoHelpfull: Yes(0) No(1)
• 8*7.8 different toppings each has 8 options next 7 options
  
• 11 years agoHelpfull: Yes(0) No(0)
• The right answer is 8p2..i.e.,56..because pairs such as (1,2);(1,3)....(7,8) and (2,1);(3,1)...(8,7) are possible
• 11 years agoHelpfull: Yes(0) No(1)
• send to kratikajain1992@gmail.com tooo....TCS coming on 18 nov
• 11 years agoHelpfull: Yes(0) No(1)
• 8*7=56 toppings
  because we generally write 8c2=28 but in case of toppings we will have some specific arrangements hence we write 8*7=56
• 11 years agoHelpfull: Yes(0) No(0)
• 8c2
• 11 years agoHelpfull: Yes(0) No(0)
• 8c2=28 different ways
• 9 years agoHelpfull: Yes(0) No(0)