In a box there are 8 red, 7 blue, and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?
Total number of balls = 21 Probability of a ball is neither red nor green = 7C1 / 21C1 = 1/3
A sum of money invested at simple interest amounts to Rs. 16800 in 2 years and to Rs. 23100 in 9 years. What is the rate of simple interest per annum?
If the student scores 27% of the marks, then he has failed by 186 marks. But if he scores 54% marks then he is passed by 246 marks. Find the passing per...
Rajesh spent 46% of his monthly income on food and 54% of the remaining of study. If total monthly savings (after spending on food and study) of Rajesh ...
In an election, two candidates participated. 20% voters did not cast their votes, out of which 600 votes declared invalid and the winner get 75% of the ...
The salary of a man increased from Rs. 16000 per month to Rs. 18000 per month. Find the increase percent.
Monthly income of A and B is Rs. (x + 1500) and Rs. x, respectively. If monthly income of A is increased by 12.5% while that of B is decreased by 25% th...
A book is listed at Rs. 2,400 and the discount offered is 10%. What additional discount must be given to bring the net selling price Rs. 1,800?
The population of the town is 10,000. If the male population increases by 5% and the female population by 10%, the population will become 10,700. How mu...
There are 100 students in a particular class. 55% students play rugby, 30 % play basketball and 15% play both the games. What is the number of students ...
A number reduced by 33% becomes 335. What percent should it be increased so that it becomes 950?
