IBM Company Numerical Ability Permutation and Combination

If a company produces 15 different model of tv sets, 2 inchs screen and 4 different model of 4 inch screen size then how many model should vendor has for all the model.

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IBM Other Question

40,41,41,42,42,42,44,44,____ If a team consists 20 members in which 20% are mathematician, then how many members should they hire so that the ratio would become 10/11.