Saved Bookmarks
This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A shopkeeper buys a number of books for 80. If he had bought 4 morebooks for the same amount, each book would have cost 1 less. Howmany books did he buy ? |
|
Answer» Let he bought x books for rs 80So the cost of each book was 80/xIf the cost of each books were re 1 less then he can buy 4 more booksSo, he can buy x+4 booksSo the cost of each of the book would be 80/(x+4)According to the question, 80/x-80/(x+4)=1(80x+320-80x)/(x^2 +4x)=1x^2+4x=320x^2+4x-320=0x^2+20x-16x-320=0x(x+20)-16(x+20)=0(x+20)(x-16)=0Therefore, x= -20, 16As x wouldnt be negative because quantity of book cant be negative so x=16So he bought 16 books |
|
| 2. |
A shopkeeper buys a number of books for 80. If he had bought 4 morebooks for the same amount, each book would have cost 1 less. Howmany books did he buy? |
|
Answer» Let shopkeeper buy n books Then cost of one book = 80/n If he bought 4 more books, then cost of one book = 80/(n+4) As per given condition 80/(n + 4) = 80/n - 180(n + 4 - n) = n(n+4)n^2 + 4n - 320 = 0n^2 + 20n - 16n - 320 = 0n(n + 20) - 16(n + 20) = 0(n - 16)(n + 20) = 0n = 16, - 20 Therefore number of books are 16 |
|
| 3. |
Answer the following questions briefly(a), What was the news that Nishikanto Ghosh gave Patol Babu?(b) How did Patol Babu react? Why? |
|
Answer» Nishikanto ghosh gave news to patol babu that his youngest brother in law naresh dutt was looking for an actor for a scene in a film they are then shooting. He had given him his name and he would contact him around ten thirty. Then patol babu reacted strangely. In a way he had not imagine that an offer to act in a film would came to him at the age of 52years |
|
| 4. |
CHRISSUURICHARVESFactorise the following1. 8 – 972 |
|
Answer» xy + zx najahvdhbajvshhs x^2-9y^2 [a^2-b^2=(a+b) (a-b)](x+9y) (x-9y) [a=x , b=9y] =(x+3y) (x-3y) is the correct answer (x+3y)(x-3y) is the best correct answer (x+3y) (x-3y) is correct answer |
|
| 5. |
यदि किसी विद्यालय में कुल विद्यार्थियों का 60%लड़कें हो और लड़कियों की संख्या 972 हो, तो उसविद्यालय में कुल कितने लड़के है?(1) 1258 (2) 1458(3) 1324 (4) 1624(5) 1828 |
| Answer» | |
| 6. |
the sum of the cube of three number which are in ratio 1:2:3 is 972. Find the number. |
| Answer» | |
| 7. |
13. A person bought some articlesat the rate of 5 per rupee andthe same number at the rate of4 per rupee. He mixed both thetypes and sold at the rate of 9for 2 rupees. In this businesshe suffered a loss of * 3. Thetotal number of articles boughtby him was |
|
Answer» Number of articles person bought be n Total cost price of articlesCP = n/5 + n/4 = 9n/20 Selling price of articles:Person sell 9 articles for Rs 2Person sell 1 article for Rs 2/9 Then, selling price of 2n articles SP = 4n/9 Thus, CP - SP = 39n/20 - 4n/9 = 3(81n - 80n)/ 180 = 3n = 3*180n = 540 Therefore, total number of articles bought = 540 |
|
| 8. |
B A S ST SRRहु 2०४2 6०L g"s.;‘a‘lz 0+ cos® O=1 |
| Answer» | |
| 9. |
T4 ¥= il कर टोल (वअं की N s St SR s SRR | g |
| Answer» | |
| 10. |
25. दो अंकों का योग 25 तथा अन्तर 13 है तो इन अंकों कागुणनफल होगा।(A) 325 (B) 315 (C) 104 (D) 1146 . लगातार आने वाली पाकत संख्याओं में से यदि पहली तीन । |
|
Answer» 114 is the right answer |
|
| 11. |
9 246 Xy + ÂĽyâ |
|
Answer» PLEASE LIKE THE SOLUTION |
|
| 12. |
1 \times 246 |
|
Answer» 246×1=246 (basic multiplication) 246 is the answer........ |
|
| 13. |
2-2464-2/3 |
|
Answer» 2+√3/4-2√3*(4+2√3)/(4+2√3)2+√3(4+2√3)/16-128+4√3+4√3+6/414+8√3/47/2+2√3 |
|
| 14. |
246 days =____% of a year. |
| Answer» | |
| 15. |
246 days =_____% of a year . |
|
Answer» (246÷365)×100=67.372 365 days= 100 percentage1 day = 100/365= 0.27then 246 days= 0.27*246 days = 67.3 percentage |
|
| 16. |
800 ThenIf HCF(a,b) = 12 axl)LCM of AB is4. |
|
Answer» HCF(a,b)=12a×b=1800∴LCM=(a×b)/HCF=1800/12=150 thank you |
|
| 17. |
рди 1L PR ORI ] e | |
|
Answer» CH3 — CH2 — CH2 -- ClThe IUPAC name is 1- chloropropane. The compound is called n-propyl chloride or 1-chloropropane. there are three carbons in a chain and all are attached to single bond therefore it is propane and there is a functional group attached to it that is chlorine so the name is chloropropane |
|
| 18. |
N=4463/325 |
|
Answer» n=13.73(approx.)ans.if helpful like it |
|
| 19. |
हक Lim tan® x —tanxA T :PR s( L )4 |
| Answer» | |
| 20. |
325÷9 |
|
Answer» 36.11 |
|
| 21. |
(वी) इज - 4 - 246 न 0 |
| Answer» | |
| 22. |
325 divide theproblem6 |
|
Answer» thank,s didi am her brother |
|
| 23. |
25-6x6+325+2,252+255 |
| Answer» | |
| 24. |
EXAMPLE 15 ÎABC is a right triangle in which C-90° and CDIAB. IfBC = a, CA = b, AB = c and CD = p then prove that)cp = ab(ii)[CBSE 1997C, '98, '99, '02]2 |
|
Answer» 1.Area is 1/2 base * height . So for the same triangle area can be 1/2*b*a and can be 1/2*p*c. Hence cp = ab 2 . From above p2 = a2b2/c2 1/p2 = c2/ a2b2 but for right triangle c2 = a2 +b2 Hence 1/p2 = (a2+b2)/ a2b2 Hence 1/p2 = 1/a2+1/b2 please like my answer if you find it useful |
|
| 25. |
\begin{array}{l}{\text { EXAMPLE 10. The value of }} \\ {\frac{1.073 \times 1.073-0.927 \times 0.927}{1.073-0.927}+\frac{\left(3^{4}\right)^{4} \times 9^{6}}{(27)^{7} \times 3^{9}} \text { is }}\end{array} |
| Answer» | |
| 26. |
L आकृति 10.36 में, केन्द्र 0 वाले एक वृत्त पर तीन fag AB और ( इस प्रकार हैं कि| ZBOC=30° T ८ 0860१ है। यदि चाप #80 के अतिरिक्त 98 W D एक बिन्दु_ हैं, तो ८4100 ज्ञात कीजिएo L Lo T |
| Answer» | |
| 27. |
ThererolC, LSimilarly, direction cosines of y-axis and z-aXlExample 5 Show that the points A (2. 3, - 4), B (1. -2, 3) and C (3, 8, - 11) arecollinearand BR are |
|
Answer» thanks is there any other method for this question |
|
| 28. |
Class 8INDIAN TALENT OLYMPIADWhen a dice is thrown, what is the probability of getting a number not greaterthan 52a. 1/6b. 1/3(c. 4/6d. 5/6 |
|
Answer» option c is the right answer 5/6 is the right answer 5\6 is the right answer option c is correct answer and because probability of getting a no. not greater than5 5/6 is the correct answer |
|
| 29. |
DaleIn the given Riqure MN in paralleldo PR L LON = to anal AR-BG.1 The value o LABC will beBX70- |
|
Answer» MBN=180 AndMBA=70THEN NBC=70 ABC=180-(MBA+NBC), 180-(70+70)=40 PLEASE GIVE ME SOME LIKESIn this diagram the given is <LBN=70°so, <BAC=70° alsothen, <ABC+<BCA=180°-70°: <ABC+70°=110°: <ABC=40° |
|
| 30. |
Find:i) 642i) 325iii) 1253 |
|
Answer» (i)64=8^2(8^2)^(1/2)=8 (ii)32=2^5(2^5)^(1/5)=2 (iii)125=5^3(5^3)^(1/3)=5 |
|
| 31. |
(1i) 325 |
|
Answer» 2*2*2*2*2 = 32 32^1/5 = 2 (2*2*2*2*2)1/5(25)1/52 |
|
| 32. |
325246112 |
|
Answer» 1 2 3 3 |
|
| 33. |
1.6(ii) 325 |
|
Answer» 2*2*2*2*2 = 32 so 32^1/5 = 2 |
|
| 34. |
325 \times ( - 204 ) |
|
Answer» -66300 is the answer |
|
| 35. |
what is prime no.and I give l example. |
|
Answer» a number that can be divided exactly only by itself and 1,....and 7 and 17 is the example a no. divided by itself |
|
| 36. |
l. Answer the following questions:a. What is force? Give an example. |
|
Answer» A force involves an interaction between two or more objects, and it causes a push orpull between the objects. There is always a direction associated with the force. Good examples of opposing force include drag due to interaction with an air mass and the force due to friction between two objects. |
|
| 37. |
99ka vargmul |
|
Answer» 99=3*3*11√99=√3*3*11=3√11and√11=3.3166so Answer is 3*3.3166=9.9498 9.9498 is the correct answer 9.9498 is the right answer 9.9498 is the correct answer ³√999.949.............is correct answer 9.94is the correct answer 9.949 is the right answer 9.9498 is the right answer 99^2 = (100 - 1)^2 = 100^2 -2*100 + 1 = 10000 - 200 + 1 = 9801 9.94987437107 this is correct answer |
|
| 38. |
4Example l : Given tan A=-, find the othertrigonometric ratios of the angle A. |
|
Answer» Like if you find it useful |
|
| 39. |
(d) Birju delivers 150 packets of milk every day. How many packets does he deliverin 15 days |
| Answer» | |
| 40. |
98 MATHEMATICUExample l If 4x-i(3x-the values of x and yExample If 4r + i)-36; where * and y are reali(-6), where x and y are real n(3r-y)-3+ihu |
| Answer» | |
| 41. |
If there are only 250 g packets of flour in a shop, how many packets shouldTanmay buy to make:2kg 500g 4kg |
|
Answer» each packets are of 250g=0.250kg so packets require for 2kg = 2/0.250=8 packets require for 500g = 500/250 = 2 packets require for 4kg = 4/0.250 = 16 |
|
| 42. |
if there are only 250 g packets of fiour in a shop, how many packets shoadTanmay buy to make: |
|
Answer» each packets are of 250g=0.250kg so packets require for 2kg = 2/0.250=8 packets require for 500g = 500/250 = 2 packets require for 4kg = 4/0.250 = 16 |
|
| 43. |
6. Solve.a. 12,650 pencils are to be packed in packets with a dozen pencils in each packe,How many packets of pencils can be packed and how many pencils will remainloose? |
|
Answer» 12650÷12154 packets2 remain 12650÷12154 packets 2 remain 1 dozen = 12 pencils 12,650÷12154 packets2 remain |
|
| 44. |
ShrevaHow many packets will she be able to make?wants to pack a 54/7 kg of mixture into small packets each containing 11/4 kg of mi |
|
Answer» pack of 5 4/7kg =39/7kgsmall packets 1 1/4kg=5/4kgto make packets divide it39/7÷5/4=39/7*4/5=39*4/7*5=156/35 =4.45 hence she will be able to make 4 packets thank you |
|
| 45. |
Sonu bought 80 frooti packetson his birthday. 26 of themwere used up. How manyfrooti packets were left? |
|
Answer» answer 54 frooti packets Ans:- 80 - 26 = 54 packets left. Initial=80Used=26Left=80-26=54 frooties No, of frooti left=80-26=54 frooti 80-26=54 very simple |
|
| 46. |
Problem sums on weightI. Mrs. Kapoor has 2 kg of neempowder. She wants to put it intosmaller packets of 200 g each. Howmany packets will she need? |
|
Answer» total packets needed=total weight/weight of one small packet=2000/200=10 packets(2 kg=2000 g) |
|
| 47. |
A shopkeeper buys some books for80. If he had bought 4 more books for the sameamount, each book would have cost .1 less. Find the number of books he bought. |
| Answer» | |
| 48. |
Verity oftheThe task1 84. Theof. ascost of a notebook is ES less than halfthe cost of a book. Write this statementlineas eat in 2 variable.Ilone2 |
|
Answer» let the cost of notebook = xand cost of book = y cost of notebook is 5 rs less than book. linear equation for this condition is y - x = 5 Let notebook =xBook=yCost of notebook (x) =(y/2)-5X=y-10/22x-y+10=0 |
|
| 49. |
(11.) A man bought an article and sold it at a gain of 5%. Ifhe had bought it at 5% less and sold it for 1 less, hewould have made a profit of 10%. The cost price of thearticle was(a) 100 (b) * 150 c) * 200 (d) 500 |
|
Answer» The cost price of the article was -₹200 200 rs is the cost of the article option C is the correct answer The right answer is option C. option (c) is the following question answer 200 is the correct answer |
|
| 50. |
8. Find:ii) 325iii) 6254in163) 2433vi) (46656) |
| Answer» | |