২৪৫৪৪
If a*b=ab/(b-a) for all numbers a and b such that a does not equal to b, what is the value of 5*(2*3)?
উত্তর
30
২৪৫৪৮
The ratio of x to y is 1/2.If the ratio of x+2 to y+1 is 2/3, then what is the value of x?
উত্তর
2
২৪৫৫০
On a certain test , a student must select 3 out of 6 questions to answer. what is the total number of different combinations of 3 questions that the student can select?
উত্তর
18