Analytical Reasoning

241

Which strengthens? \'Exercise reduces heart disease risk. Regular exercisers have fewer heart attacks.\'

A Exercise is healthy

B Heart attacks indicate heart disease

C Regular exercise prevents heart attacks

D All of the above

242

If A↔B, B↔C, and A is true, then:

A C is true

B C is false

C C is unknown

D B is false

243

Some doctors specialize. All specialists earn more. Not all who earn more are happy. Therefore:

A All doctors are happy

B Some doctors earn more

C No doctors are happy

D All happy people are doctors

244

What assumption? \'Green spaces improve mental health because nature reduces stress.\'

A Green spaces provide nature

B Nature reduces stress

C Stress affects mental health

D All of the above

245

If exactly 2 of P, Q, R are true, P→Q is true, and R is false, then:

A P is true and Q is true

B P is false and Q is true

C P is true and Q is false

D Both P and Q are false

246

Some fruits are tropical. All tropical fruits need warmth. Some warmth-loving things are hardy. Therefore:

A All tropical fruits are hardy

B Some tropical fruits may be hardy

C No tropical fruits are hardy

D All hardy things are tropical fruits

247

Which weakens? \'Smaller classes improve education because students get more attention.\'

A Attention helps learning

B Teacher quality matters more than class size

C Students need attention

D Education is important

248

If P→Q, P→R, Q→S, and S is false, then:

A P is true

B Q is true

C P is false

D R is false

249

All engineers study physics. Some who study physics are brilliant. No brilliant person is average. Therefore:

A All engineers are brilliant

B Some engineers are not average

C No engineers are average

D All average people are engineers

250

What is the conclusion? \'Since renewable energy reduces carbon emissions and emissions cause climate change, we should invest in renewables.\'

A Renewable energy reduces emissions

B Emissions cause climate change

C We should invest in renewables

D Climate change is bad

251

If A∧B→C, A∧C→D, B is true, and D is false, then:

A A is true

B C is true

C A is false

D Both B and C are true

252

Some animals are birds. All birds can sing. Some who can sing are beautiful. Therefore:

A All birds are beautiful

B Some birds may be beautiful

C No birds are beautiful

D All beautiful things are birds

253

Which strengthens? \'Education reduces poverty. Countries with higher literacy rates have lower poverty.\'

A Literacy indicates education

B Lower poverty is better

C Education is accessible

D All of the above

254

If A→B, B→C, C→A, and A is true, then:

A B and C are true

B B is true, C is unknown

C C is true, B is unknown

D B and C are false

255

Some students are leaders. All leaders have charisma. Some charismatic people inspire others. Therefore:

A All students inspire others

B Some students may inspire others

C No students inspire others

D All inspiring people are students

256

What assumption? \'Regular check-ups prevent disease because early detection improves outcomes.\'

A Check-ups detect disease early

B Early detection improves outcomes

C Prevention is better than cure

D All of the above

257

If P∨Q is true, P∧Q is false, P→R is true, and R is false, then:

A P is true

B Q is true

C P is false

D Both P and Q are false

258

Some countries have free education. All countries with free education have higher enrollment. Higher enrollment correlates with economic growth. Therefore:

A All countries have economic growth

B Some countries benefit economically from free education

C No countries benefit from free education

D Free education always causes growth

259

Which weakens? \'Caffeine improves concentration because coffee drinkers perform better on focus tests.\'

A Concentration is important

B Coffee drinkers may have other habits that improve focus

C Tests measure concentration

D Caffeine is a stimulant

260

If exactly one of A, B, C is true, and A→B is true, then:

A A is true

B B is true

C C is true

D B is false