Two pipes A and B can fill a tank in 20 and 24 minutes. Resepctively. Pipe C can empty the tank in 10 minutes. Pipes A and B are opened for 5 minutes and then pipe C is also opend. In what time can tank become full or empty after opening pipe C?
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`5` different balls are placed in `5` different boxes randomly. Find the probability that exactly two boxes remain empty. Given each box can hold any
Correct Answer - B `(b)` Each ball can be placed in 5 ways. `:.` Total number of ways, `n(S)=5^(5)` `2` empty boxes, can be selected in `"^(5)C_(2)` ways and `5` balls...
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In the circuit shown in Fig, initially `K_(1)` is closed and `K_(2)` is open . What are the charges on each capacitor. Then `K_(1)` was opened and `K_
Correct Answer - `"case I:" Q_(1) =18 mu C, Q_(2) = 9mu C"and"Q_(3)=0` `"case I:" Q_(2) =9/2 mu C, Q_(3) = 9/2mu C
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(i) In __________ Book-keeping system, only Cash/Bank A/c and Personal accounts of Debtors and Creditors are opened.
(i) Single Entry (ii) Assets, Liabilities (iii) Conventional Accounting (iv) Arithmetical
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Which of the following is the empty/non-empty set `(i) {x:x"is a real number and"x^(2)-1=0}` `{x : x"is a real number and" x^(2)+1=0}` `(iii) {x : x "
Correct Answer - `(i)` non empty `(ii)` empty `(iii)` non-empty `(iv)` non-empty
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The base of a cubical tank is `25 m xx 40 m`. The volume of water in the tank is increasing at the rate of `500 m^(3)//min`. Find the rate at which th
Correct Answer - `0.5 m//min`
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Find the number of ways in which the letters A, B, C, D, E, F can be placed in the 8 boxes of the given figure so that no row remains empty. (figure)
Correct Answer - `6l xx 26`
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A company manufactures two type of novelty souvenirs made of plywood, Souvenirs of type A recquire 8 minutes each for cutting and 10 minutes each for
Correct Answer - `8x+10y le240` `10x+15y le 300` ` x ge 0, y ge 0`
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Himesh opened a saving bank account with a bank on `3-6-2007` with Rs. 500. His transactions during june and July were as follows: `{:(,"Deposited Rs.
Correct Answer - Rs. 700, Rs. 1350 and Rs. 1850
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Pipe A can fill a tank in 40 minutes . Pies B can empty the tank in 30 minutes . If both the pipes are opened simultaneously when tank is half full, t
Correct Answer - empty
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Pipe A in fill a tank in 15 horurs Pipe A and Pipe B together can fill it in 10 hours Pipe B can fill 8 liters per minute. Find the capicity of the ta
Correct Answer - 14400 litres
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