Question

In a colony of 100 blocks of flats numbering 1 to 100, a school van stops at every sixth block while a school bus stops at every tenth block. On which stops will both of them stop if they start from the entrance of the colony?

Answer 1

Flat numbers van stops

= { 6 , 12 ,18 , 24 , 30 , 36 , 42 , 48 , 54 , 60 , 66 ,72 , 78 , 84 , 90 , 96 }

Flat numbers bus stops

= { 10 , 20 ,30 , 40 , 50 ,60 ,70 , 80 ,90 , 100 }

Common flat numbers = { 30 , 60 , 90 }

Therefore ,

30 , 60 and 90 flat numbers are common bus stops

of Van and Bus .

Answer 2

Step-by-step explanation:

Flat numbers van stops = { 6 , 12 ,18 , 24 , 30 , 36 , 42 , 48 , 54 , 60 , 66 ,72 , 78 , 84 , 90 , 96 }Flat numbers bus stops = { 10 , 20 ,30 , 40 , 50 ,60 ,70 , 80 ,90 , 100 }Common flat numbers = { 30 , 60 , 90 }Therefore , 30 , 60 and 90 flat numbers are common bus stops of Van and Bus .