Practice Question and Answer
8Q: A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If two marbles are picked at random, what is the probability that they are either blue or yellow ? 4866 05b5cc6dae4d2b4197774e8d7
5b5cc6dae4d2b4197774e8d7- 13/17false
- 24/21false
- 32/21true
- 45/17false
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Answer : 3. "2/21"
Explanation :
Answer: C) 2/21 Explanation: Given that there are three blue marbles, four red marbles, six green marbles and two yellow marbles. Probability that both marbles are blue = ³C₂/¹⁵C₂ = (3 x 2)/(15 x 14) = 1/35 Probability that both are yellow = ²C₂/¹⁵C₂ = (2 x 1)/(15 x 14) = 1/105 Probability that one blue and other is yellow = (³C₁ x ²C₁)/¹⁵C₂ = (2 x 3 x 2)/(15 x 14) = 2/35 Required probability = 1/35 + 1/105 + 2/35 = 3/35 + 1/105 = 1/35(3 + 1/3) = 10/(3 x 35) = 2/21
Q: Famous Swimmer Michel Flaps related to____.
4865 05e1e4e5028feb138cd364355
5e1e4e5028feb138cd364355- 1Austriliafalse
- 2Narvefalse
- 3Switergerlandfalse
- 4Americatrue
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Answer : 4. "America"
Q: The two richest Ecozones of India are
4863 05dbc3e5d6960167377567d35
5dbc3e5d6960167377567d35- 1The Himalayas and Vindhyasfalse
- 2The Himalayas and Eastern Ghatsfalse
- 3The Himalayas and Western Ghatstrue
- 4The Himalayas and Aravalli’sfalse
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Answer : 3. "The Himalayas and Western Ghats "
Q: Which currency is legally recognized in our country?
4863 05fc217a096415e6951aee167
5fc217a096415e6951aee167- 1Good moneyfalse
- 2Credit-currencyfalse
- 3letter moneytrue
- 4Checkfalse
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Answer : 3. "letter money"
Q: The most essential feature of the Parliamentary form of Government is the _________ 4861 05b5cc7f4e4d2b41977751ff2
5b5cc7f4e4d2b41977751ff2- 1sovereignty of the Parliamentfalse
- 2written constitutionfalse
- 3accountability of the executive to the legislaturefalse
- 4independent judiciarytrue
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Answer : 4. "independent judiciary"
Explanation :
Answer: D) independent judiciary Explanation:
Q: The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is ? 4859 05b5cc6dce4d2b4197774e9c4
5b5cc6dce4d2b4197774e9c4- 18 kmphfalse
- 26 kmphtrue
- 37.5 kmphfalse
- 45.5 kmphfalse
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Answer : 2. "6 kmph"
Explanation :
Answer: B) 6 kmph Explanation: Speed of the stream = 1Motor boat speed in still water be = x kmphDown Stream = x + 1 kmphUp Stream = x - 1 kmph[35/(x + 1)] + [35/(x - 1)] = 12x = 6 kmph
Q: Who was the founder of Divya Jeevan Sangh?
4858 060cb1a55f57cb3774e48f1f4
60cb1a55f57cb3774e48f1f4- 1Ramakrishna Paramhansafalse
- 2Swami Sivanandatrue
- 3Swami Vivekanandafalse
- 4Mother Teresafalse
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Answer : 2. "Swami Sivananda"
Q:Change the sentences as directed, choosing from the options given below
Where did you go last evening? (Change into Assertive)
4855 05e68b1ee6093d17f83388626
5e68b1ee6093d17f83388626- 1I does go to see a movie.false
- 2I am go to see a movie.false
- 3I am went to see a movie.false
- 4You didn't go anywhere last evening.true
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