Statements: Only a few Sea are River. All River are Water. All Water are Ocean. Conclusions: I. Some Ocean are Sea. II. All Sea are Ocean.

Only I follow
Only II follow
Both I and II follow
Neither I nor II follow

Correct answer: Only I follow

Solution

Some Sea are River (given). All River are Water. All Water are Ocean. So: Some Sea → River → Water → Ocean → Some Sea are Ocean → Some Ocean are Sea ✓. II: Only 'a few' Sea are River; remaining Sea may not be River→Water→Ocean. 'All Sea are Ocean' doesn't follow.

Related IBPS PO Reasoning questions

Twenty percent of all energy consumed in the country is consumed by home appliances. If appliances that are twice as energy-efficient as those currently available are manufactured, this figure will eventually be reduced to about ten percent. The argument above requires which of the following assumptions?
The difficulty with the proposed high-speed train line is that a used plane can be bought for one-third the price of the train line, and the plane, which is just as fast, can fly anywhere. The train would be a fixed linear system, and we live in a world that is spreading out in all directions and in which consumers choose free-wheel systems (cars, buses, aircraft), which do not have fixed routes. Thus, a sufficient market for the train will not exist. Which of the following, if true, most severely weakens the argument presented above?
In an attempt to check its increasing pollution, Litter City has introduced a levy of Rs. 100 on every private car entering the city. The administration argues that the imposition of this levy, in addition to the existing toll at the entrance of the city, will switch people from using their cars to using public transport. Which of the following, if true, provides the best evidence that the city administration’s argument is flawed?
The US President has downsized his country’s nuclear arsenal, helped negotiate a deal to halt Iran’s nuclear-weapons programme, and led a global initiative to secure radioactive materials. But his legacy on nuclear issues remains uncertain, as progress in securing nuclear materials has been slow. Which of the following is an assumption of the speaker?
Statements: Should all indirect taxes in India be combined into a single tax on all commodities? Arguments: I. Yes. This will considerably simplify the tax collection mechanism, and the cost of collecting tax will also reduce. II. Yes. Manufacturers and traders will be benefited by this, which in turn will boost tax collection. III. No. No other country has adopted such a system.
Statements: Should trade unions be banned completely? Arguments: I. Yes. Workers can concentrate on production. II. No. This is the only way through which employees can put their demands before the management. III. Yes. Employees get their illegal demands fulfilled through these unions. IV. No. Trade unions are not banned in other economically advanced countries.

⚔️ Practice IBPS PO Reasoning free + battle 1v1 →