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उत्तर :
व्याख्या :
19 C in a CB means 19 Coins in a Carrom Board. We have 9 white coins, 9 black coins and one red coin in a carrom board.
प्र: A number is increased by 20% and then decreased by 20%, the final value of the number is ? 2277 05b5cc75ce4d2b4197774fc39
5b5cc75ce4d2b4197774fc39- 1increase by 2%false
- 2decrease by 3%false
- 3decrease by 4%true
- 4increase by 5%false
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उत्तर : 3. "decrease by 4%"
व्याख्या :
Answer: C) decrease by 4% Explanation: Here, x = 20 and y = - 20Therefore, the net % change in value=x + y + xy100 %= 20 + -20 + 20 × -20100% or - 4% Since the sign is negative, there is a decrease in value by 4%.
प्र: The threshold limit upto which coins can be issued as per the Coinage Act 2011 ? 2277 05b5cc6c1e4d2b4197774db46
5b5cc6c1e4d2b4197774db46- 1100false
- 2200false
- 3500false
- 41000true
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उत्तर : 4. "1000"
व्याख्या :
Answer: D) 1000 Explanation:
प्र: The number of ways in which six boys and six girls can be seated in a row for a photograph so that no two girls sit together is ? 2276 05b5cc6e2e4d2b4197774ec3e
5b5cc6e2e4d2b4197774ec3e- 12(6!)false
- 26! x 7false
- 36! x ⁷P₆true
- 4Nonefalse
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उत्तर : 3. "6! x ⁷P₆"
व्याख्या :
Answer: C) 6! x ⁷P₆ Explanation: We can initially arrange the six boys in 6! ways.Having done this, now three are seven places and six girls to be arranged. This can be done in ⁷P₆ ways. Hence required number of ways = 6! x ⁷P₆
प्र: How many birthdays does the average person have? 2276 05b5cc670e4d2b4197774c05f
5b5cc670e4d2b4197774c05f- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
Any person can have only 1 birthday i.e, the day he was born. And every year we celebrate it's anniversaries.
प्र: Eugenics is the study of 2276 15b5cc6aee4d2b4197774d16f
5b5cc6aee4d2b4197774d16f- 1impair the racial qualities of future generations either physically or mentallytrue
- 2different races of mankindfalse
- 3genetic of plantsfalse
- 4people of European originfalse
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उत्तर : 1. "impair the racial qualities of future generations either physically or mentally"
व्याख्या :
Answer: A) impair the racial qualities of future generations either physically or mentally Explanation: Eugenics is the study of altering human beings by changing their genetic components. It is the study of the agencies under social control that may improve or impair the racial qualities of future generations either physically or mentally.
प्र: Which of the following is a characteristic of all minerals? 2276 05b5cc68ee4d2b4197774c40b
5b5cc68ee4d2b4197774c40b- 1Crystalline solidsfalse
- 2Minerals are inorganicfalse
- 3All minerals are formed in a natural processfalse
- 4All the abovetrue
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उत्तर : 4. "All the above"
व्याख्या :
Answer: D) All the above Explanation: Common properties of Minerals are : 1. All minerals are formed in a natural process. 2. Minerals are inorganic 3. Minerals are crystalline solids. 4. Every mineral is an element or compound with a definite chemical composition.
प्र: _ po _ mp _ n _ _ onmpo_. 2275 05b5cc6d6e4d2b4197774e67e
5b5cc6d6e4d2b4197774e67e- 1opmpnmfalse
- 2mponpofalse
- 3mnompntrue
- 4mnopnmfalse
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उत्तर : 3. "mnompn"
व्याख्या :
Answer: C) mnompn Explanation: The pattern 'mpon' is repeated.