Which of the following relations is not a function? A. (6,4), (-4, 2), (3, 1), (6,2)
B. (-4,4), (3, 2), (6, 1), (-6,5)
C. (-6,4), (3, 3), (-4,1), (6,2)
D. (3,4), (-4,2), (3, 1), (-6, 2)

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

Why can't my rank go i have 1723 points, but my rank is only at ambitious, which is only 250 points! like, (p. s. i know this isn't related to math, but i just don't know why it's doing this and i would really appreciate if someone could tell me whats going on with this)