What will be the probability of choosing one red and one green ball from a basket containing 4 red and 5 green balls if two balls are drawn randomly?
Required probability = (4C1 × 5C1)/9C2 = (4 × 5)/(9 × 4) => 5/9
What is the speed of man in still water?
Statement I: The speed of man in still water is twice the speed of the stream.
Statement II: ...
How many boys are there in the class?
I. The number of girls is 30% of the number of boys.
II. The ratio of the number of boys to that of girls is 3:5.
What is the present age of mother?
I. The difference between the ages of mother and daughter is 45 years.
II. The present age of daughter ...
The difference between the two digits of a two – digit number is 6. What is the number?
I. The digit at unit place is bigger than the ten&r...
How many students in a class can write both French and Spanish?
I. In the class, 25% of the total students can write Spanish and two-fifth of the...
What is the monthly salary of Varun?
Statement I: Varun spends one-third of his salary on rent, one –fifth on household expenses, one – si...
What is the speed of the boat in still water?
Statement I. The boat travels at the speed of 12 km/h upstream.
Statement II. The boat t...
What is the circumference of semi-circle (in cm)?
I. Area of the semi-circle is half of the area of a parallelogram.
II. The length of the...
What is the profit percent or loss percent incurred in the transaction?
I. 5% discount is given on the marked price.
II. Cost price is 10%...
How much time will train A take to cross a platform of length 400 m?
Statement I: The train A crosses another train B in 40 seconds.
S...
