catswift

6 Questions
2 Answers

0

8

1

+32

among 3 digit numbers, how many numbers are there with exactly 9 factors? help

among 3 digit numbers, how many numbers are there with exactly 9 factors?
i know 2^8 is an option

catswift 18 sept 2024

0

249

2

+32

help please

a,b,c,d,e and f are positive numbers such that bcdef/a=4, acdef/b=9, abdef/c=16,abcef/d=1/4, abcdf/e=1/9,abcde/f=1/16. Then (a+c+e)-(b+d+f)=_____

catswift 25 jun 2022

0

309

1

+32

question on a math competition, i know the answer, i don't know how to get to it

A stack contains 7 green marbles and 3 red marbles. 2 marbles are taken from the sack w/out replacement. What is the probability of taking one green marble and one red marble (in any order)?

catswift 9 may 2022

0

304

2

+32

pls help

Ben chooses a random integer between and inclusive, twice (and he may choose the same integer both times). What is the probability that at least one of the numbers Ben chooses is a multiple of ?

catswift 5 may 2022

+1

348

3

+32

Hii, I'm stuck on this

Ten distinct points are chosen on a circle. A line segment is drawn between every pair of chosen points. How many line segments are drawn?
Please help!!

Melody ●●●

catswift 22 abr 2022

+1

312

6

+32

im stuck on this :((

I run a book club with people, not including myself. Every day, for days, I invite three members in the club to review a book. What is the smallest positive integer so that I can avoid ever having the exact same group lee mas ..

●●●●●●

catswift 13 abr 2022

+32

+2

thank you so much melody!!!

catswift23 abr 2022

+32

+1

thanks, both of you!!

catswift13 abr 2022