Pakistan MCQs

The valid order preserves W before X before Y and Z before V.
Only W, Z, X, V, Y satisfies both chains.

Those liking at least one are 60 + 50 - 20 = 90.
Therefore, 100 - 90 = 10 like neither.

One switch leaves the bulb warm, one leaves it lit, and one leaves it cold and dark.
These three states identify all three switches in one entry.

Of the 6 possible orders, exactly half place A before B.
The valid orders are ABC, ACB, and CAB.

A conjunction is true only when both component statements are true.
Because Q is false, P AND Q is false.

One hundred days leaves a remainder of 2 when divided by 7.
Two days after Tuesday is Thursday.

Inclusive OR is true when at least one component is true.
Since Q is true, the whole statement is true.

Each hour mark represents 30 degrees.
At 2:00, the hands are two hour marks apart, or 60 degrees.

For 3, 5, and 7, squaring and adding 1 gives 10, 26, and 50.
The same rule matches every example.

The contrapositive of P → Q is not-Q → not-P.
It is logically equivalent to the original conditional.

A implies B, and B implies C.
By chaining the two rules, A guarantees C.

Red objects form a subset of large objects, which form a subset of visible objects.
Therefore, red objects must be visible.