Walking home after work

Probability Level 1

In Palo Alto, the streets are numbered sequentially. If Calvin walks from the 3rd street to the 9th street, how many blocks would he have walked through?


The answer is 6.

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Arron Kau by Arron Kau

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5 solutions

Sam Leo
Oct 14, 2013

3 to 4 is one block, 4 to 5 is one block, 5 to 6 is another block.. until 8 to 9

Thus, there will be 9-3 = 6 blocks to walk through.. If you want, you can count manually: 3 -- 4 -- 5 -- 6 -- 7 -- 8 -- 9

4 Helpful 0 Interesting 0 Brilliant 0 Confused

Good explanation.

Calvin Lin Staff - 7 years, 7 months ago
Krishna Priyan
Jan 25, 2014

It is 6 because he starts from 3rd street to 9th street and one block means one street. So 9-3=6

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Fajrul Falah
Oct 14, 2013

9 − 3 = 6 9-3=6

1 Helpful 0 Interesting 0 Brilliant 0 Confused

(-----------------1St street----------) (-----------------Block----------------) (-----------------2nd street----------) (-----------------Block-----------------) (-----------------3rd street------------) (-----------------Block------------------- )1 (-----------------4th street---------------) (-----------------Block---------------------)2 (-----------------5th street---------------) (-----------------Block--------------------)3 (-----------------6th street----------------)- (-----------------Block---------------------)4 (-----------------7 th street---------------) (-----------------Block--------------------- )5 (-----------------8th street----------------) (-----------------Block----------------------)6 (-----------------9th street----------------)- Therefore by counting we get Calvin walks through 6 blocks

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Ilham Adiyaksa
Oct 14, 2013

9-3 = 6

0 Helpful 0 Interesting 0 Brilliant 0 Confused

1000000000000000000000000002222222-11111111111111030-93333333333333333+26733333333332337268649814=?

mahitha mutyala - 7 years, 7 months ago

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