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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


B

Ans 1:

Class : Class 3
The first statement is false because it should be stated except 2 and 5 in the second part of the sentence, since 5 is also a prime number.

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