Answer:
19958400 ways
Step-by-step explanation:
As the question involves arrangement, permutation will be used.
P(n,r) = n! / (n-r)!
Here
n=12
and
r = 8
So,
P(12,8) = 12!/(12-8)!
= 12!/ 4!
=19958400 ways
Therefore, the 8 objects from 12 can be arranged in 19958400 ways ..
Answer:
question no:3
Step-by-step explanation:
here
= x^2 + 5x - 300
= x^2 +(20-15)x -300
= x^2 + 20x - 15x - 300
= x(x+20) -15(x+20)
= (x+20) (x - 15)
Answer is B.
hope it helps
Answer:
number of students in a van=12
number of students in a bus=52
Step-by-step explanation:
let number of students in a van=x
number of students in a bus=y
1x+6y=324 ...(1)
9x+3y=264 ...(2)
multiply (2) by 2
18x+6y=528 ...(3)
(3)-(1) gives
17x=204
x=204/17=12
put in (1)
12+6y=324
6y=324-12=312
y=312/6=52
