As x³ is divisible by both 3 and 5, x is also divisible by both 3 and 5.sampath wrote:How many integers X are there between 21 and 51 inclusive such that X^3 is divisible by both 3 and 5
Between 21 and 51 inclusive only 30 and 45 are divisible by both 3 and 5.
Hence, there 2 such integers.
