MBA Exam

A = {179, 180, 181,…..,360}. B is a subset of A such that sum of no two elements of B is divisible by 9. The number of elements in B cannot exceed

1) 102
2) 81
3) 82
4) 101

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MBA Other Question

A number of saplings are lying at a place by the side of a straight road. These are to be planted in a straight line at a distance interval of 10 m between two consecutive saplings. Mithilesh,the country's greatest forester,can carry only one sappling at a time and has to move back to the orginal point to get the next sapling. In this manner he covers a distance of 1.32 kms. How many saplings does he plant in the process if he ends at the starting point?Plz post a sol to this Q

1) 15
2) 14
3) 13
4) 12
5) 10
PLZ TELL ME FORMULA TO FINDING NUMBER OF UNIQUE FACTORIZATIONS OR METHOD ??For example: 12 has 3 unique factorizations: 2*2*3, 2*6, 3*4 . Note: 3*4 and 4*3 are not considered different.