Puzzle with Numbers - Total to 100
The digits 1 to 9 are written in ascending order. Without changing the order of the digits and using only the and – signs three times and four times make the total to 100. The figure shows …...
8 Years Ago
Train Problem - Relative Velocity
Two trains, each 400 m long, pass each other completely in 10 secs when they are moving in opposite directions. When they are moving in same direction, the trains take 20 secs to pass each other co…...
8 Years Ago
Find the Probability
A and B throw a dice alternatively. A wins if he throws a number greater then 4. B wins if he throws a number > 4. What is the probability of B winning if starts first? Click for solution to Pro…...
8 Years Ago
Trigonometric Translations
Consider the equations y = a sin(bx c) d where a, b, c and d are constants Each of these constants has a different impact on the original sine function 1) constant a – Value of “aR…...
8 Years Ago
Happy π Day
Earlier posts on pi Happy Pi Day...
8 Years Ago
Conditional Probability
Two numbers are selected at random from the integers 1 to 9. If the sum of the two numbers is even, find the probability that both numbers are odd? Click for solution to Conditional Probability...
8 Years Ago
