Choosing a number from 1 to 10 what is the probability of choosing a number less than 3?
about 2% chance.
there are ten numbers and you want to choose a number less than three. there are only two numbers less than three; 1 & 2. because there are only 2 numbers less than three and 10 to choose from, it becomes a 2% chance.
3 dimes, 9 pennies, and 5 nickels
call the number of dimes d. then, we will have 3d pennies and d + 2 nickels. the value for each group is 10d, 3d, and 5d + 10. add these to get 18d + 10. this is equal to 64 cents, as stated in the question. so, setting these equal, we get that d = 3, and there are 3 dimes, 9 pennies, and 5 nickels.