Subject :IMO Class : Class 6
Which one of the following statements is true?
(A) If a number is divisible by 3, it must be divisible by 9.
(B) If a number exactly divides the sum of two numbers, it must exactly divide the two numbers separately.
(C) A number is divisible by 18, if it is divisible by both 3 and 6.
(D) None of these
How can C be the correct answer as 12 is also divisible by both 3 and 6 and not divisible by 18
Ans 1:
Class : Class 9
None of these should be answer. C can not be correct eg 24, it is divisible by both 3 and 6 but not by 18
Ans 2:
Class : Class 7
None of these as 12 divisible by both 3 and 6 is not divisible by 18
Ans 3:
Class : Class 8
None of these should be the answer
Ans 4:
Class : Class 7
The answer is D
Ans 5:
Class : Class 7