Indicate the number divisible by 3 and 5 simultaneously
a) 715
b)220
c)255
d)369

c) 255.

Step-by-step explanation:

You need a number whose last digit is 0 or 5 and is divisible by 3.

So first of all the number can;'t be 369.

A quick way to see if a number is divisible by 3 is to add all its digits until you get a single digit. Then if this digit is 3, 6 or 9 then the number is divisible by 3,

So in the case of 255 we have:

2+ 5+ 5 = 12 ,  1 + 2 = 3.

We see that 220 and 715  produce digits 4 and 7+1+5 = 13 = 4 so it cant be one of them

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

your question is incomplete, write all the numbers in the sequence that it tells you.  

step-by-step explanation: