Question
A card is chosen at random from a standard deck of 52
playing cards, without replacing it, a second card is chosen. What is the probability that first card chosen is king and the second card chosen is a Queen?Solution
P (king on first pick) = 4/52 P (Queen on second pick given king on first pick) = 4/51 P (King and Queen) = 4/52 × 4/51 = 4/663
A solid cylinder has a radius of 3 cm and a height of 10 cm. If it is melted and recast into a cone with a base radius of 3 cm, what will be the height ...
The ratio of two numbers is 4:8 and their LCM is 64. The numbers are:
If a point P(x, y) is equidistant from A(6, 2) and B(-2, 6), find the equation representing this condition.
13   7   8   13.5   29    ?    228
A school has 1,200 students. 60% of them are boys. If 30% of the boys and 40% of the girls are on the sports team, how many students are not on the spor...
Ratio of monthly income to monthly expenditure of A is 8:7, respectively and monthly savings of A is Rs. 2880. Find the monthly income of A.
"M' sold a watch to 'N' making a profit of 20%. 'N' then sold it to 'X' at a 10% loss. If 'M' had directly sold the watch to 'X' ...
The vertices of a triangle are (2, 1), (5, 4), and (8, 1). What is the area of the triangle?
What will come in place of '?' in the given expression?
{(14.25 + 124 ÷ 16 + 23) ÷ 243 (1/5) + √169} ÷ √0.16 = ?
...Find the greatest 3-digit number which when divided by 11 or 14 leaves a remainder of 3.
