x years ago, Apu was one-fifth as old as Tipu was then. Tipu will be twice as old as Apu. What is the ratio of Apu's current age to Tipu's current age?
When 5x= 3 and y6= 2 then 3+yx+5 = ?
তিনটি মেশিন একটি কাজ যথাক্রমে ৫, ৬ ও ৭ ঘণ্টায় করতে পারে। দুটি মেশিনে সর্বোচ্চ ক্ষমতায় কাজ করে এক ঘণ্টায় কতটুকু কাজ করতে পারবে?
১১৩০
৯২০
৩৫
১১১৫
In a sample of 50 people, 19 had type O blood, 22 had type A blood, 7 had type B blood and 2 had type AB blood. If a person is selected randomly, find the probability that the person has neither type A nor type O blood?
The area of two spheres are in the ratio 1:4. The ratio of their volume is-