Question

if 2576a456b is divisible by 15 then what will be the value of a and b​

Answer 1

Answer:

There are two possible pairs

1) a=1, b=0

2)a=2, b=5

Method to solve:

To make this number divisible by 15 you will have to make it divisible by 3 and 5

(as 3*5=15), and of course, you can prove it divisible by any two prime factors of 15 but I chose 3 and 4 as that's the most convenient way to do so....

then you have to do a bit of hit and trial to get your answer

Request:

Mark me as the brainliest if you get the answer!! don't forget to rate it 5

Hope it helps you