The probability that a man will live 10 more years, is and the probability that his wife will live 10 more years, is . Then, what is the probability that neither will be alive in 10 yr ?
The probability that in a year of the 22nd century chosen at random, there will be 53 Sunday, is
A girl walks 4 km towards West, then she walks 3 km in a drection 30° East of North and stops. Then, the girl's displacement from herinitial point of departures is
None of these
If a = ,b = and c = are linearly dependent vectors and , then the value of are respectively
None of these
The projection of the vector a = on the vextor is
9
B.
Forces of magnitude 5 and 3 units acting in the directions and respectively act on a particle which is displaced from the point (2, 2, - 1) to (4, 3, 1). The work done by the forces is
148 units
None of these