Question

harry, peter, and 9 girls sit in a row. harry cant sit in an end seat. In how many ways can they be arranged?

Answer 1

do u have choices??

Answer 2

no.

Answer 3

@satellite73 can U please help me its URGENT!!!!!!!!!!!!!!!!!!!!!!1

Answer 4

can u help me with one question gabby? its a different one: how many 4 digit number can be formed tht are greater than 3000, and whos last digit is either a 3 or a 6

Answer 5

about the first one.
11 people, harry can't sit in the first or last seat. so why don't we just say he can't sit in the first or second and make it easier
10 choice for first seat (not harry) then 9 for second (still not harry) then 2 people are seated leaving 9! ways for the rest of the chairs.
make sense?

Answer 6

in other words i think it is
\[10\times 9\times 9!\]

Answer 7

second on is easier.
7 digits for the thousands place
3,4,5,6,7,8,9
then 10 for the hundreds
10 for the tens
and 2 for the ones place

\[7\times 10\times 10\times 2\] i think is right

Answer 8

okay thnks alot , but do u mind if i ask a couple more, cause im doing a timed test online, and really need help.

Answer 9

oh and for the first question is it 10! times 9! times 9!

Answer 10

no the first on is
\[10\times 9\times 9!\] i think

Answer 11

looks like a pretty damn big number
http://www.wolframalpha.com/input/?i=10*9*9!

Answer 12

second one is easier, it is 1400 unless i made a mistake
no guarantees for these

Answer 13

actually am fairly confident my first answer is right

Answer 14

okay how abt this question: theres only six seats in an suv, one of the seats is modified to only fit a baby, and the other one is the drivers seat. the number of ways that 5 adults and a baby can be legally seated if only 4 of the adults are licensed is.

Answer 15

4 for the drivers seat, then 4 times 3 times 2 for the remaining 4 seats
forget the baby, only one choice there

Answer 16

so i get
\[4\times 4\times 3\times 2=96\]

Answer 17

okay you are really help ful for tht u get a medal, and if u help me with a couple more please. i beg you. lol. i know i am being abit annoying but its all tht i get it in the end

Answer 18

(n-3)P 2 = 110. what is the value of n

Answer 19

is this supposed to be \(n-3\) permute 2 =110?

Answer 20

this problem is straight forward. what two adjacent integers multiply to give 110?
must be
\[11\times 10\] so \(n-3=11\) and therefore \(n=14\)

Answer 21

is this some on line course?

Answer 22

class work

Answer 23

its a practice test for marks.

Answer 24

the final score in a soccer game is 6 to4 how many half time scores are possible?

Answer 25

? anyone

Answer 26

@satellite73

Answer 27

i guess we can count them
6 4, 6 3, 6 2, 61, 6 0 so 5 with the winning team at 6
5 with winning team at 5 etc etc
\[7\times 5\]

Answer 28

so 35

Answer 29

@satellite73 thankyou so much for the help really appreciate it.

Answer 30

yw, glad to help