Question

How many two digit numbers are divisible by either 3 or 5?

Answer 1

@phi

Answer 2

Didnt you ask this question? answers were given already

Answer 3

\[\frac{99-12}3+\frac{95-10}5-\frac{90-15}{15}\]

Answer 4

Yes!

Answer 5

all of them

Answer 6

or (number of two digit numbers divisible by 3)+(number of two digit numbers divisible by 5)-(number of two digit numbers divisible by 15)

Answer 7

This question has been answered a couple of times.

Answer 8

common multiples of 3 and 5

Answer 9

and then of course, my expression is wrong xP

Answer 10

It should have been:
\[\frac{99-12}3+1+\frac{95-10}5+1-\frac{90-15}{15}-1\]

Answer 11

:)

Answer 12

@kc_kennylau don't you mean +1 one the last one?

Answer 13

nope, coz it's in the parentheses :)

Answer 14

O.O didn't catch that

Answer 15

xP