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Volume of a brick = 0.00975 m³.

Step-by-step explanation:

Volume of the wall = 63 m³

Cost to build the wall = 84000 Rs

Cost to prepare a brick = 13 Rs

Since, relation between cost of the wall is directly proportional to the volume of the wall

C ∝ V

C = kV

Here, k = Proportionality constant

k = = Constant

Therefore,

V₂ =

    = 0.00975 m³

Therefore, volume of a brick is 0.00975 m³.

69

step-by-step explanation:

.24

step-by-step explanation:

the probability is   .24

the first player had the highest probability of getting a silver marble

the game could be made fair by adding back the marble that was drawn after each draw