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?
1
Van and Bus will meet at 40th, 60th, and 90th blocks.
2
Van and Bus will meet at 30th, 50th, and 90th blocks.
3
Van and Bus will meet at 30th, 60th, and 90th blocks.
4
Van and Bus will meet at 30th, 60th, and 80th blocks.