![]() ![]() How many different sums of money can be totaled with these five coins? ![]() Only the math textbooks need to be grouped together.Ī boy has five coins, each of a different value. The textbooks from each subject must be grouped together. Also, how many nine-digit palindromic are there? (Palindromic: a number whose digits read the same backwards and forwards.) How many arrangements are possible? Solution of exercise 1įind the total possible amount of eight-digit palindromic. She wants to arrange all the balls in a row in such a way that the red balls occupy the odd positions. Suppose Alice has 5 red balls and 4 green balls. In how many ways, 6 vegetables can be selected from this set (without repetition)? Exercise 10 ![]() In how many ways, 4 candies can be selected from this set (without repetition)? Exercise 9 How many diagonals does a pentagon have and how many triangles can be formed with its vertices? Exercise 8 How many ways can they sit if the president and secretary always have to be seated next to one another? Exercise 7 With the dot and dash system of Morse code, how many different signals can be sent using four clicks or less? Exercise 6Įight people are seated at a dinner table at a political function. If the balls of like color are not distinguished from each other, how many possible ways can they be ordered? Exercise 5 How many different sums of money can be totaled with these five coins? Exercise 4ĥ red, 2 white and 3 blue balls are arranged in a row.
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