Read the following conjecture.
any number that is divisible by 3 is also divisible by 9.
find a counterexample to show that the conjecture is false.
18
27
48
45

45

Step-by-step explanation:

We have to prove that any number that is divisible by 3 need not be divisible by 9

To show that conjecture that any number that is divisible by 3 is also divisible by 9 we have to show an counter example.

THe four options given are 18, 27, 48 and 45.

Out of these 4 numbers, 18, 27, 45 are divisible by both 3 and 9.

Hence these numbers cannot be shown as counter example.

Take the case of 48

48 is divisible by 3 as 48 =16(3)

But 48 is not divisible by 9.

Thus 45 is a good counterexample to prove number that is divisible by 3 is also divisible by 9 is false.

37 = ending with 7

unit's digit in the cube..3

56 = ending with 6

unit's digit in the cube..2

133 = ending with

unit's digit in the cube..7

hope it : ( : )