TCS Company Logical Reasoning Blood Relations

if tarun buys only pen costing rs 13 each or pencils costing rs 5 each he is left out with rs 2 in each case .which f te following cannot b te amt?pts 457
782
577
1042 plz explain a simple logic

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TCS Other Question

Q1. Given a collection of points P in the plane, a 1-set is a point in P that can be separated from the rest by a line, .i.e the point lies on one side of the line
while the others lie on the other side.
The number of 1-sets of P is denoted by n1(P). The minimum value of n1(P) over all configurations P of 5 points in the plane in general position (.i.e no
three points in P lie on a line) is
a)3 b)5 c) 2 d)1
A bag contains 10 red and 4 green balls whereas a second bag contains 9 red and 5 green balls. A ball is selected randomly from one of bag. What would be the probability of selecting a ball from first bag? It is given that the selected ball is necessarily red.