A ceramic pottery unit hires 8 craftsmen by paying each of them Rs 900 per day. The 9th craftsman demands Rs 950 per day. If this craftsman is hired then all other craftsmen must be paid Rs 950. The marginal resource (labour) cost of the 9th craftsman is _________.
A man has some hens and some cows. If the total number of heads of hens and cows together is 50 and the nunber of feet of hens and cows together is 142, then the number of cows is
In the following question, four groups of three numbers are given. In each group the second and third number are related to the first numberby a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one.