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dg2
A classroom has 26 rows (From A to Z), each row is divided in three columns and each column has five seats. To enter in the class, four doors (D1, D2, D3 and D4) are available and reaching up to the door two stairs (LH & RH) are available. A student wants to take the seat in the row C, F or P and then in how many ways he can get the seat.
There are four doors and and two stair cases to each door, correct?
You would use a permutation equation to solve this if I am reading this question correctly.
yes how to do, 26*15=390 c=15 ,p=15,f=15 so 45/390
Think about every step.
First you must choose which stair case, there are 8. Then which door, 4 and so on.
|dw:1389783816216:dw| Remember this too
i thought it was 2 stairs for every door sorry!
2 staircase,4 doors,15 seats for each row
yes however there are 3 rows (C,F,P) possible which means there are 45 seats to choose from --> 45*4*2 = 360
whether it is correct r not how to check