Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें
8प्र: A man could buy a certain number of notebooks for Rs.300. If each notebook cost is Rs.5 more, he could have bought 10 notebooks less for the same amount. Find the price of each notebook ? 2272 05b5cc6dde4d2b4197774ea28
5b5cc6dde4d2b4197774ea28- 115false
- 220false
- 310true
- 48false
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 3. "10"
व्याख्या :
Answer: C) 10 Explanation: Let the price of each note book be Rs.x. Let the number of note books which can be brought for Rs.300 each at a price of Rs.x be y. Hence xy = 300 => y = 300/x (x + 5)(y - 10) = 300 => xy + 5y - 10x - 50 = xy =>5(300/x) - 10x - 50 = 0 => -150+x2+5x multiplying both sides by -1/10x => x2+15x-10x-150=0 => x(x + 15) - 10(x + 15) = 0 => x = 10 or -15 As x>0, x = 10.
प्र: 36 संतेरे बेचने पर एक फल विक्रेता को 4 संतरों के विक्रय मूल्य के बराबर हानि होती है। उसका हानि प्रतिशत क्या होगा? 2271 05d133058925caa2d5bbbff6b
5d133058925caa2d5bbbff6b- 110%true
- 234%false
- 313%false
- 414%false
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 1. "10%"
प्र: If Riya's age is four times the age of Siya and if Riya's age is 24 yrs , find the age difference between Riya and Siya ? 2268 05b5cc6dce4d2b4197774e98d
5b5cc6dce4d2b4197774e98d- 12 yrsfalse
- 212 yrsfalse
- 318 yrstrue
- 46 yrsfalse
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 3. "18 yrs"
व्याख्या :
Answer: C) 18 yrs Explanation: Let Siya's age = x Then Riya's age = 4x But given Riya's age = 24 => 4x = 24 => x = 6 Hence Siya's age = 6 yrs => The age difference = 24 - 6 = 18 yrs.
प्र: खन्ना ने दो साल के लिए साधारण ब्याज पर 10,000 रुपये का ऋण 3% प्रति वर्ष की दर से लिया। कुल राशि जो वह 2 साल में ब्याज के रूप में चुकाएगा, वह उसके मासिक वेतन का 3% है
उसका मासिक वेतन क्या है?
2260 05d4a9a6c11160f2052371025
5d4a9a6c11160f2052371025उसका मासिक वेतन क्या है?
- 130,000रुपयेfalse
- 216,000रुपयेfalse
- 320,000रुपयेtrue
- 412,000रुपयेfalse
- 5इनमें से कोई नहींfalse
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 3. "20,000रुपये "
व्याख्या :
3% of SI=PRT/100
10,000*3*2/100= 3 of x
then x =20,000
प्र: A student can divide her books into groups of 5, 9 and 13. what is the smallest possible number of the books ? 2259 05b5cc74ae4d2b4197774fab3
5b5cc74ae4d2b4197774fab3- 1487false
- 2585true
- 3635false
- 4705false
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 2. "585"
व्याख्या :
Answer: B) 585 Explanation: The smallest possible number of books = L.C.M of 5, 9 and 13.Therefore, L.C.M of 5,9 and 13 is = 5 x 9 x 13 = 585.
प्र: What is the ratio of 18 minutes to one hour ? 2256 05b5cc6bfe4d2b4197774da24
5b5cc6bfe4d2b4197774da24- 11/5false
- 23/4false
- 31/7false
- 43/10true
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 4. "3/10"
व्याख्या :
Answer: D) 3/10 Explanation: One hour = 60 min 18/60 = 3/10
प्र: How many remainders are possible if 16n is divided by 9 for any positive integral value of n ? 2250 05b5cc77ae4d2b41977750151
5b5cc77ae4d2b41977750151- 11false
- 22false
- 33true
- 44false
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 3. "3"
व्याख्या :
Answer: C) 3 Explanation: When 16nis divided by 9, we have 1619, remainder = 7 1629, remainder = 4 1639, remainder = 1 1649, remainder = 7 1659, remainder = 4 1669, remainder = 1 So, we have cyclicity of 3 factors i.e 7,4,1. Hence only 3 remainders are possible.
प्र: If log72 = m, then log4928 is equal to ? 2247 05b5cc761e4d2b4197774fd5d
5b5cc761e4d2b4197774fd5d- 11/(1+2m)false
- 2(1+2m)/2true
- 32m/(2m+1)false
- 4(2m+1)/2mfalse
- उत्तर देखें
- Workspace
- SingleChoice
उत्तर : 2. "(1+2m)/2"
व्याख्या :
Answer: B) (1+2m)/2 Explanation: log4928 = 12log77×4 = 12+122log72= 12+log72= 12 + m= 1+2m2.