Question

a factory owner purchases two types of machines,a and b for his facorythe area occupied by machines a and b are 1000 sqm and 1200 sqm respectively. machine A requires 12 mens and machine B requires 8 men to operate it.the daily output of machine A and B are 60 units and 40 units respectively the owner has an area of 9000m^ available and 72 skilled men who can operate the machine how many machines of each type should he buy to maximise the daily output

it is known that 40% of the students in a certain collage are girls and 50% of the students are above median height.if two third of the boys are above the median height,then what is the probability that a randomly selected students who is below median height is a girls?

Check whether 6 raised to the power n can end with digit 0 for any natural number n

Check whether 6 raised to the power n can end with digit 0 for any natural number n

Check whether 6 raised to the power h can end with digit 0 for any natural number n

1. PROVE THAT : 2 cos π/13 cos 9π/13 cos 3π/13 cos 5π/13 =0
2. A beam is supported at its end by supports which are 12 meters apart.Scince the load is concentrated at its centre,there is a deflection of 3 cm at the centre and the deflected beam is in the shape of a parabola.How far from the centre is the deflection 1 cm.

plz answer this 

• In 1.1 Q. 10 (5) ;  for transitive, if (1,2) and (2,1) belong to R, then (1,1) & (2,2) must belong to R to satisfy the condition of transitive relation  , which is not there. So how is it transitive ?
  

2x-y=2 and 4x-y=4 plotting graph