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A barrel full of beer has 2 taps, one midway which draws a litre in 6 minutes and the other at the bottom which draws a litre in 4 minutes. The lower tap is normally used after the level of beer in the barrel is lower than midway. The capacity of the barrel is 36 litres. A new assistant opens the lower tap when the barrel is full and draws out some beer. As a result the lower tap has been used 24 minutes before the usual time. For how long was the beer drawn out by the new assistant?
Answer is (c).
Answer is (c).
See lessIf x=b+c, y=c-a, z=a-b, then x²+y²-2xy+2yz is equal to
Answer is (b).
Answer is (b).
See lessHCF of y³-4y and 4y(y³+8) is
Answer is (a).
Answer is (a).
See lessA tiled floor of a room has dimensions m*m sq.m. Dimensions of the tile used are n*n sq.m. All tiles used are green tiles except diagonal tiles which are red.After some years some green tiles are replaced by red tiles to form an alternate red and green tile pattern.How many green tiles are removed?
Answer is (b).
Answer is (b).
See lessIf (x-4)/(-x²-6) ≤ 2/(-x²-6) then
Answer is (d).
Answer is (d).
See lessWhich of the following is true?
Answer is (d).
Answer is (d).
See lessIf 6≥x≥-2 and 4≥y≥-4, then limits for y/x, where x and y are non zero integers, is
Answer is (d).
Answer is (d).
See lessWhat are the limits of 2ⁿ(n+1)ⁿ/nⁿ; where n is a positive integer?
Answer is (b).
Answer is (b).
See lessIf a=10¹⁰⁰ and n=10ᵅ, then in which interval does a! =1.2.3…10¹⁰⁰ lie?
Answer is (c).
Answer is (c).
See lessWhich of the following is true?
Answer is (b).
Answer is (b).
See less