Abstract Reasoning Flashcards

If the friends end up with 41, 20 and 29 marbles respectively, which number does Alice roll?

Answer: 1

This question requires specific game rules or a preceding passage to determine how a player's roll affects their final marble count. Without this context, it's impossible to definitively explain the calculation. However, assuming Alice's roll of '1' is the input that, according to the game's (missing) mechanics, leads to one of the given final marble counts (41, 20, or 29) for one of the friends, then '1' is the correct answer based on those unstated rules.

“Whoever stole the money must have had both an opportunity and a motive.” If this is true, which one of these sentences must also be true?

Answer: If Finn did not have a motive, he cannot have stolen the money.

The original statement implies two necessary conditions: if someone stole the money, they must have had an opportunity, AND they must have had a motive. The contrapositive of 'If P then Q' is 'If not Q then not P.' Therefore, if Finn did not have a motive (not Q), it logically follows that he could not have stolen the money (not P), as having a motive was a prerequisite for the act.

The children Anita, Brian, Eric, Lee and Zara are all in one family. Lee is 1 year younger than Eric. Brian and Eric are twins. Anita is 3 years older than Lee. Brian is 8 years old. Zara is older than Eric, but younger than Anita. Only one of the folowing sentences is true. Which is it?

Answer: Anita is 10.

The prize rules state that prizes are given for finishing first, second, or third, AND for scoring a hole-in-one. Sam's mistake likely lies in assuming these categories represent distinct individuals. A single player could, for instance, finish first and score a hole-in-one, meaning they would qualify for two types of prizes but still count as only one prize winner, which affects the total number of recipients.

In the Junior Golf Championship, prizes are given out to the players who finish first, second, and third, and to anyone who gets a hole-in-one. Which one of the following sentences shows the mistake Sam has made?

Answer: The hole-in-one might have been scored by a player who finished first, second, or third.

To solve this spatial reasoning puzzle, one must mentally (or physically) arrange the three small pieces to determine the exact shape needed to complete a perfect square. Option B represents the specific geometric piece that precisely fills the remaining void when the three small pieces are correctly positioned, thereby forming the complete square.

Which one of the following big pieces can be combined with the three small pieces to make a square?

Answer: B.

To strengthen Sanjay's argument, the chosen statement must support his specific viewpoint. Given that option C, 'There is no practical way to store the energy generated by wind turbines,' is the correct answer, Sanjay's argument must be focused on the limitations or challenges of wind energy. This statement highlights a critical drawback of wind power's intermittency, making it a less reliable standalone energy source without effective storage solutions, thereby bolstering an argument against its widespread or exclusive adoption.