৩৪০১
A man has Tk. 10,000 to invest. He invests TK. 4000 at 5% and Tk. 3500 at 4%. In order to have a yearly income of TK. 500. he must invest the remainder at ____
উত্তর
6.4%
৩৪০২
A class of 50 girls and 60 boys sponsored a football game. If 52% of the girls and 30% of the boys attended the game, what percentage of the class went to the game?
উত্তর
40%
৩৪০৩
Two numbers A and B are such that the sum of 5% of A and 4% of B is two -third of the sum of 6% of A and 8% of B. What is A: B?
উত্তর
4 : 3
৩৪০৯
U= 1,2,3,4,5,6,7,8, A=1,2,3, B=2,4,6,8, C=3,4,5,6 হলে A'∩C'=
উত্তর
{1, 2, 3, 4, 5, 6, 7, 8}