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# When Y = 3, which of the following is FALSE?

$\begin {array} {1 1} (A)\;Y \: is\: prime\: and\: Y \: is\: odd \\ (B)\;Y\: is\: odd \: or\: Y \: is \: even \\ (C)\;Y \: is \: not \: prime\: and\: Y \: is\: odd \\ (D)\;Y \: is\: odd\: and\: 2Y\: is\: even \end {array}$

Ans : (C)
Remember what is TRUE: 3 is prime, odd and 2(3) is even.
Choice 1: T and T is TRUE
Choice 2: T or F is TRUE
Choice 3: F and T is FALSE
Choice 4: T and T is TRUE