Which of the following is correct for divisibility?
(A) A number is divisible by 6 if it is divisible by 3 or 2.
(B) A number is divisible by 5 if its unit digit is 0 or 5.
(C) A number is divisible by 3 if its unit digit is divisible by 3.
(D) A number is divisible by 4 if the number formed by its last two digits is divisible by 4.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct statements for divisibility are:
(A) A number is divisible by 6 if it is divisible by 3 and 2 both (Not by 3 or 2), because LCM of 2 and 3 is 6.
(B) A number is divisible by 5 if its unit digit is 0 or 5 = All numbers with last digit 5 and 0 are divisible by 5.
C) A number is divisible by 3 if sum of the digits of the number is divisible by 3 not the unit digit.
(D) A number is divisible by 4 if the number formed by its last two digits is divisible by 4 = Number is divisible by 4 if its last 2 digit are divisible by 4.
So, the correct answer is:
(B) and (D) only