DU • ঢাকা বিশ্ববিদ্যালয় আইবিএ (বিবিএ) ভর্তি পরীক্ষা ২০১০-২০১১
প্রশ্ন ও সমাধান
In "RIGHT ON TIME" courier service, during an autumn day, a courier has to deliver six packages Hurricane, Torpedo, Cyclone, Tornado, Typhoon, and Thunder. He delivers no other packages, and no two packages are delivered at the same time. The order in which the packages are delivered conforms to the following conditions:Hurricane is neither delivered first nor delivered last.Cyclone is delivered before Tornado is delivered.Thunder is delivered after Tornado is delivered.Typhoon and Cyclone are delivered in immediate succession, regardless of whether Typhoon or Cyclone is delivered first.The number of people diagnosed with dengue fever (which is contracted from the bite of an infected mosquito) in Bangladesh this year is twice the number diagnosed last year. The authorities have concluded that measures to control the mosquito population have failed in the region. All of the following, if true, would cast doubt on the authorities' conclusion EXCEPT-
- ক
More cases are now reported because of increased administrative efficiency.
- খ
A more effective diagnostic test was introduced about nine months ago.
- গ
The incidence (number of cases per thousand) of malaria, also contracted from mosquito biteshas increased
- ঘ
The disease is prevalent only in some industrialized areas which have shown a dramatic increase in population due to migration.
- ঙ
A very high proportion of the cases were in people who had recently returned from neighboring countries
আরও প্রশ্ন অনুশীলন করতে অ্যাপে যাও