৩১৭০১
০.১,২ এবং ৩ দ্বারা গঠিত চার অঙ্কের বৃহত্তম এবং ক্ষুদ্রতম সংখ্যার বিয়োগফল -
উত্তর
2187
৩১৭০২
The sum of the present ages of a father and his son is 60 years. Six years ago, father's age was five times the age of the son. After 6 years, son's age will be -
উত্তর
20 years
৩১৭০৩
The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is
উত্তর
9.2 m
৩১৭০৫
The sum of two numbers is 22 and the sum of their squares is 404, then the product of two numbers is -
উত্তর
40
৩১৭০৭
In a class , the number of girls is 20% more than that of boys. The strength of the class is 66. If 4 more girls are admitted to the class , the ratio of the number of boys to that of the girls is -
উত্তর
3 : 4
৩১৭০৯
Two number are in the ratio 3:5. If 9 is subtracted form each , the new numbers are in the ratio 1223. The smaller number is
উত্তর
33