15
Nine (9).
7
The number is 21. 21 ÷ 3 = 7 7 - 3 = 4
You can, however it will not result in a whole number. The answer would be about 2.57.
It is the number halfway between them or the number got when you add them and divide by 2. So for 7 and 10, the number 8.5 is the median.
you just divide the denominator by 7 and then add 2
18
15
256
7
Pick any number. Multiply by 6. Add 13. Subtract 7. Divide 3. Divide 2. Then subtract by the original number you chose. Your result will always be 1. Tell a friend to mentaly multiply their age by 2. Tell them to add 14 then divide 2. Ask your friend what number they currently have. Now, you mentally subtract 7 from the number they tell you, then you'll know your friend's age.
The number is 21. 21 ÷ 3 = 7 7 - 3 = 4
The number is 72 because (72/9)-7 = 1
Nope... to check if a number will divide by 3 - add the digits of the number together. In this case, 6+7+7=20, which will not divide exactly by three.
You can, however it will not result in a whole number. The answer would be about 2.57.
207
It is the number halfway between them or the number got when you add them and divide by 2. So for 7 and 10, the number 8.5 is the median.
Find the 'average' of the two numbers. To do that, add the two numbers, and divide their sum by 2. The result is the number that's exactly mid-way between them.