These are the math questions! please answer these for me! thanks so much!!!
1. The number 64 has the property that it is divisible by its units digit. How many whole numbers between 10 and 50 have this property?
2. What is the units digit of 19^19 + 99^99
3.You have nine coins: a collection of pennies, nickels, dimes, and quarters having a total balue of $1.02, with at least one coin of each type. How many dimes must you have?
4. Keiko tosses one penny and Ephraim tosses two pennies. The prbability that Ephraim gets the same number of heads that Keiko gets is..?
2006-10-17 10:24:50 · 6 answers · asked by Anonymous in Education & Reference ➔ Homework Help
1. Zimbabwe
2. Chocolate
3. The Beatles
4. Clostridium botulinum
Hope this helps.
2006-10-17 10:29:00 · answer #1 · answered by Trollbuster 6 · 3⤊ 0⤋
For #1, you'll have to spend a few minutes going through numbers. Every number is divisible by 1, the question is how many of those numbers have 1 as a units digit? They will be 11,21,31, and 41.
Then go to 2. How many even numbers in the group have 2 as a units digit?
It won't take too long.
2. What happens when you keep multiplying numbers that end in 9? The answers will start with a units digit of 1, then 9, then 1 again, then 9 again, and so on.
2006-10-17 17:31:52 · answer #2 · answered by PatsyBee 4 · 1⤊ 0⤋
srry i only no 4. it would be 50 percent chance. or 1:2 becuase its a penny that has 2 sides, heads and tails. probablity is 1:2
hope that helps
2006-10-17 17:28:56 · answer #3 · answered by blank 4 · 1⤊ 1⤋
1. ?
2. ?
3. 1
4. 1/2
2006-10-17 17:33:30 · answer #4 · answered by Caitlin 2 · 0⤊ 0⤋
<~~~~ Already graduated, so do your own homework. Maybe you should pay attention in class and actually LEARN something.
2006-10-17 17:35:19 · answer #5 · answered by AzOasis8 6 · 2⤊ 0⤋
who gave you such questions?
2006-10-17 17:28:44 · answer #6 · answered by princess C 2 · 1⤊ 1⤋