Practice Question and Answer
8Q: A group of 10 representatives is to be selected out of 12 seniors and 10 juniors. In how many different ways can the group be selected if it should have at least one senior ? 6179 05b5cc6eee4d2b4197774eed7
5b5cc6eee4d2b4197774eed7- 1²²C₁₀ + 1false
- 2²²C₉ + ¹⁰C₁false
- 3²²C₁₀false
- 4²²C₁₀ - 1true
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Answer : 4. "²²C₁₀ - 1"
Explanation :
Answer: D) ²²C₁₀ - 1 Explanation: The total number of ways of forming the group of ten representatives is ²²C₁₀. The total number of ways of forming the group that consists of no seniors is ¹⁰C₁₀ = 1 way The required number of ways = ²²C₁₀ - 1
Q: निम्नलिखित शब्दों में से कौन - सा शब्द ‘अपेक्षा’ के अर्थ का सूचक नहीं है?
6177 05e6389c8f1640a77574eb4a3
5e6389c8f1640a77574eb4a3- 1आशाfalse
- 2निराशाtrue
- 3आवश्यकताfalse
- 4इच्छाfalse
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Answer : 2. "निराशा "
Q: Which of these relationships is true of an uncharged atom? 6176 05b5cc688e4d2b4197774c35a
5b5cc688e4d2b4197774c35a- 1The atomic mass is equal to the atomic number.false
- 2The number of electrons is equal to the number of neutrons.false
- 3The number of protons is equal to the number of electrons.true
- 4The atomic mass is equal to the number of electrons.false
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Answer : 3. "The number of protons is equal to the number of electrons."
Explanation :
Answer: C) The number of protons is equal to the number of electrons. Explanation: The number of protons is equal to the number of electrons. That is the number of positive charges is equal to the number of negative charges.
Q: Cost price of 21 objects is equal to selling price of 15 objects. What is the profit? 6173 05d132f44925caa2d5bbbff66
5d132f44925caa2d5bbbff66- 125%false
- 230%false
- 333%false
- 440%true
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Answer : 4. "40%"
Q: Which of the following is not included in the national income?
6168 05efbff36e824154f4027a1c1
5efbff36e824154f4027a1c1- 1win the lotterytrue
- 2Government expenditure incurred on construction of new bridgesfalse
- 3Charged rent of houses in owner's possessionfalse
- 4None of thesefalse
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Answer : 1. "win the lottery"
Q: Lichens are the best indicator of 6163 15b5cc6ade4d2b4197774d0ff
5b5cc6ade4d2b4197774d0ff- 1Air pollutiontrue
- 2Sound pollutionfalse
- 3Noise pollutionfalse
- 4Water pollutionfalse
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Answer : 1. "Air pollution"
Explanation :
Answer: A) Air pollution Explanation: 1. Lichens are plants that grow in exposed places such as rocks or tree bark. 2. Lichens are widely used as environmental indicators or bio-indicators. They can be used as air pollution indicators, especially of the concentration of sulfur-di-oxide in the atmosphere. 3. They need to be very good at absorbing water and nutrients to grow there.
Q:In each of the following questions, sentences are given with blanks to be filled in with an appropriate word (s). Four alternatives are suggested for each question. Choose the correct alternative out of the four and indicate your choice for the correct answer.
It appears as though John’s having a run of bad luck, he failed to secure the much coveted scholarship, in spite of his dedication and intense_____.
6160 05f0536b126cfc348bd7092df
5f0536b126cfc348bd7092df- 1Diligencetrue
- 2Lassitudefalse
- 3Ambitionsfalse
- 4Munificencefalse
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Answer : 1. "Diligence"
Q: In the following diagram, the triangle represents cricket players, the circle represents ‘students’ the rectangle represents boys and the square represents dancers. The numbers in different segments show the number of persons.
How many students are dances and cricket players but not boys?
6159 15df20503fb64ec452cb6335a
5df20503fb64ec452cb6335aHow many students are dances and cricket players but not boys?
- 17true
- 212false
- 34false
- 416false
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