NAT MCQs

The rule A → C requires C whenever A is chosen.
Selecting A without C directly violates the condition.

Every student must receive exactly one identical pen.
There is only one distinguishable final distribution.

The constraints form a single chain S before P before Q before R.
Only S, P, Q, R satisfies all three conditions.

Let the son's age be x and the father's age 2x.
Then 3x = 54, so x = 18.

Fame in acting does not establish expertise in nutrition science.
The endorsement is not reliable scientific evidence.

Ruling out alternative explanations strengthens the claim that training caused the decline.
The other facts do not address competing causes.

More buses reduce congestion only if they replace some private-vehicle trips.
That behavioral change is necessary for the plan's logic.

The stated reason directly links access difficulties to postponement.
The stronger claims are not supported.

Statement I directly gives x = 7.
Statement II allows many positive integers and is not sufficient.

Statement I gives only an age difference, and Statement II gives only Sara's age.
Together they show Ali is 14 years old.

A number divisible by 4 is even, and a number divisible by 2 is even.
Therefore, either statement independently answers the question.

Statement I shows a exceeds b by 3, so a > b.
Statement II alone permits either a or b to be larger.