Tutors Answer Your Questions about Divisibility and Prime Numbers (FREE)
Question 744545: An old women goes to market and a horse steps on her basket and crashes the eggs.The rider offers to pay the damages and asks her how many eggs she had brought .She does not remember the exact number,but when she had taken them out two at a time ,there was one egg left.The same happened when she picked 2,3,4,5,6 at a time, but when she took seven at a time they came out even.What is the smallest number of eggs she could have had? Please do explain the method....
Click here to see answer by fcabanski(874)  |
Question 729410: Refer back to Week One Discussion and use the names and ages of yourself and the other two people you selected. Make sure one is older than you and one is younger than you.
In years, how old was the older person when you were born?
Write an equation that models how old in years each of you will be, when your ages add up to 150 years old. For example, if x = your age and the eldest person was a year older than you, you would write their age as x + 1. Then the equation would be: x + (x+1) = 150.
Explain the reasoning which helped you develop your equation.
Solve for your future ages. Are your answers reasonable, do they add up to 150?
In years, how old were you when the youngest person was born?
At some point during the lives of you and the youngest person, your age will be three times his/her age at that moment. Write an equation which models how old in years each of you will be when you are three times as old as the younger person.
Explain the reasoning which helped you develop your equation.
Solve the equation for your ages when you are three times as old as the youngest person. Are your answers reasonable?
Respond to at least two of your classmates’ postings. Check their equations and investigate for mathematical errors. Help with a constructive critique.
My mother is 64 years old and I'm 27 years old and my son is 5 years old. Somebody please help me I have no idea what to do.
Click here to see answer by lynnlo(4155) |
Question 718732: Following recess, the 100 students at a school lined up for the following activity: The first student opened all the 1000 lockers in the school. The second student cloased all lockers with even numbers. The third student "changed" all lockers that were numbered with multiples of 3 by closing those that were open and opening those that were closed. The fourth student changed each locker whose number was a multiple of 4 and so on. After all 1000 students had completed the activity, which lockers were open? Why?
Click here to see answer by jkdamm(1) |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395
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