Answer 1)   1/3 x (54 x 150 + 60 x 300 + 36 x 450) = 1/3 x 42300 = 14100.   Answer 2) Required ratio of chairs = 64 x 450 + 56 x 50036 x 450 + 44 x 500 = 56800/38200 = 284/191.   Answer 3)   Required number of chairs =  35 x 12100 x 50000= 3600.

Answer: B) 45 Explanation: Number of squares in the given figure is 16 + 9 + 19 + 1 = 45.

Answer: A) Only a is sufficient Explanation: The sum of square of two no is 116 i.e no lie 1-11, because 11x11 =121 which is greater than 116 again after cheaking all possible pair of no only 4 and 10 satisfy this condsn , again the progression is of positive integer so 10 cant not be 1st termso the 1st term is 4,but from the 2nd we cant able to find the 1st term so only 1st statement is sufficient to answer the question

Answer: A) Non-elastic effects Explanation: Rolling friction or rolling drag is the force resisting the motion when a body rolls on a surface. It is mainly caused by non-elastic effects, that is, not all the energy needed for deformation of the wheel, roadbed, etc... is recovered when the pressure is removed. Another cause of rolling resistance lies in the slippage between the wheel and the surface, which dissipates energy.

Answer: C) Are highly committed Explanation: As per the rule of adverb, the adverb is followed by the third form of verb.

Answer: A) bare Explanation: Bleak means an area of land lacking vegetation and exposed to the elements like deserts.

Answer: C) use the same grammatical construction in all similar headings throughout an outline. Explanation:

Answer: D) diligence is more important than brightness. Explanation: Parallel construction error in the original statement. A similar form is required on each side of the comparison. " Diligence - brightness ".