Ask
your own question, for FREE!

Mathematics

bomacharles:

find the probability that a number chosen at random between 200 and 800 inclusive will be a multiple of 9

Still Need Help?

Join the QuestionCove community and study together with friends!

jhonyy9:

so like a first step what is a number multiple of 9 ? what mean this ? - between 200 and 800 how many the same numbers are there ?

surjithayer:

22-2 9-2=7 add to 200 200+7=207 first number is 207 to find last number divide 800 by 9 9|800

88-8 subtract from 800 800-8=792 so numbers are 207,216,223,...,792 find the nummber of numbers.

first find the least number >=200 to do so divide by 9 9| 200

22-2 9-2=7 add to 200 200+7=207 first number is 207 to find last number divide 800 by 9 9|800

88-8 subtract from 800 800-8=792 so numbers are 207,216,223,...,792 find the nummber of numbers.

surjithayer:

it is an A.P. sequence. d=9 a1=207 an=792 use the formula to find n. an=a1+(n-1)d this gives number of favorable events. total number of events=800-200+1=601 (as both 200 and 800 are calculated.) then finally find the probability.

Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!

Join our real-time social learning platform and learn together with your friends!

Latest Questions

axie:
Hey everyone, hope your having a great day! As many of you know, it is no filter

15 seconds ago
89 Replies
3 Medals

Aujuanaih235:
Maria rewrites a fraction less than 1 as a decimal. The numerator is a whole number greater than 0.

23 minutes ago
0 Replies
0 Medals

jarvispacheco:
Which parts of an ecosystem perform cellular respiration?

14 minutes ago
34 Replies
2 Medals

jake111:
What is polination and fertilization. A. axesual B. sexual

26 minutes ago
23 Replies
4 Medals