The students of a school were asked to name their favorite type of pet .Of the 430 students surveyed ,258 said that their favorite type of pet was a dog .Suppose that only 150 students were surveyed ,with similar results,about how many students would say that a dog is their favorite type of poet ?
A 58
B 90
C 98
D 146
Solution
Correct Answer: Option B
নির্ণেয় ছাত্র সংখ্যা =(258× 150)/430 =90
অ্যাপ/ওয়েবসাইটে রুটিনভিত্তিক নিয়মিত লাইভ পরীক্ষা হচ্ছে।