Practice NAT questions with answers and explanations.
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Each hour mark represents 30 degrees.
At 2:00, the hands are two hour marks apart, or 60 degrees.
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For 3, 5, and 7, squaring and adding 1 gives 10, 26, and 50.
The same rule matches every example.
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The contrapositive of P → Q is not-Q → not-P.
It is logically equivalent to the original conditional.
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A implies B, and B implies C.
By chaining the two rules, A guarantees C.
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Red objects form a subset of large objects, which form a subset of visible objects.
Therefore, red objects must be visible.
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The path from A to D passes through A-B, B-C, and C-D.
That requires three road segments.
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Each match corresponds to a unique pair of teams.
The number of pairs is 6×5/2 = 15.
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Each handshake is a unique pair of people.
The number of pairs is 8×7/2 = 28.
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If he is truthful, the claim that he always lies is false; if he is a liar, the claim would be true.
Both possibilities contradict the assigned behavior.
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Order does not matter when selecting a committee.
The number of selections is 5 choose 2 = 10.
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Because all labels are wrong, the Mixed-labeled box contains only one fruit type.
One draw identifies it, and the remaining labels can then be assigned by elimination.
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The prizes are distinct, so order matters.
The number of assignments is 5×4×3 = 60.
