Subject :IMO Class : Class 6
State 'T' for true and 'F' for false and select the correct option.
(i) A prime number cannot have 0, 2, 4, 5, 6 and 8 at its ones place except 2.
(ii) Two numbers are called co-primes, if their L.C.M. is 1.
(iii) If X is a factor of Y and Y is a factor of Z, then X is also a factor of Z.
(iv) 4 is the smallest composite number.
(i) (ii) (iii) (iv)
A T T F T
B F F T T
C T F T T
D T F T F
In this question, the answer is supposed to be B as (i) is false but the answer given is C and 5 is a prime number. Then how come that B is the answer?