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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. |
Find the variance of the number obtained on a throw of an unbiaseddie.6 |
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Answer» Like if you find it useful |
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| 2. |
Square roots of 4356 |
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Answer» We can write4356 as4356=2×2×3×3×11×11we took comman and so root of 4356 is 2×3×11=66 |
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| 3. |
square roots of the(ii) 400 |
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| 4. |
Find the square roots(i) 729 |
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Answer» 729 = 3 * 3 * 3 * 3 * 3 * 3 √729 = √3 * 3 * 3 * 3 * 3 * 3 = 27 |
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| 5. |
23. Compute the square roots of Z--1-i |
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| 6. |
. How many 3 digit even numbers can be forned from the digits 1,2.3,4.5,6ifdieits ean he repeated?formed using the first 10 letters of the Engl |
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| 7. |
1A sum of money was distributed among 4 people in theratio 3:4:6:7. If the first person gets Rs. 1800. find theshares of the other three people. |
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Answer» 3X=1800x=600the share of three people are4×600=24006×600=36007×600=4200 the share be 3x,4x,6x 7xgiven 3x=1800 x=600the share of three people are4×600=24006×600=36007×600=4200 Let the ratio factor be X. Amount 4 people get = 3X, 4X, 6X, 7X. since 1st people get 1800 Rs. 3X = 1800 X = 600 ER. RAVI KUMAR ROY Share of other three peoples 2nd people get = 4x600 = 2400 Rs. 3rd people get = 6x600 = 3600 Rs. 4th people get = 7x600 = 4200 Rs. let ratio factor be x; 4 people = 3x, 4x , 5x, 6x; 1st people get = Rs, 1800; 3x =1800; ; x= 1800/3=600; 2nd people =4 × 600 =2400, 3rd people = 5 x 600 = 3000; 4nd people = 6 x 600= 3600 4200 is the right answer. plz like my answer |
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| 8. |
Divide ? 7400 among three people A, B and C in the ratio 3:5:12. |
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Answer» 3x + 5 x + 12x = 740020 x= 7400x= 370 share of A = 3*370= 1110 B= 5*370= 1850 C= 12*370= 4440 |
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| 9. |
co repel(a) repetition of the digits is not allowed?How many 3-digit even numbers can be formed from the digits 1,2,3,4,,6itioh adigits can he repeated?I t lir coe can be formed using the first 10 letters of the Eng |
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| 10. |
5Which are the correct 4 letters that will form sensible words ffollowing first letters:1.b____,, d, fc(1) loat(2) rood (3) rawn (4) rown |
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Answer» 1 is baker2 is crime3 is dolls4 is flies 1.B rown2.C rood3.D rawn4.F loat |
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| 11. |
3,500 is to be shared among three people so that the first person gets 50%。second person who in turn gets 50% of the third person. How much will each ofthem get ?nt is Shalu's |
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Answer» Let the share of the third person be xShare of second one = 50/100x = x/2Share of first one = 50/100 × x/2 = x/4ATQx+x/2+x/4 = 35004x+2x+x/4 = 35007x/4 = 35007x = 3500×4x = 3500×4/7x = 500×4x = ₹2000 share of third person = x = ₹2000Share of second person = x/2 = ₹2000/2 = ₹1000Share of first person = x/4 = ₹2000/4 = ₹500 |
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| 12. |
In how many ways can the letters of the word ASSASSINATION be arrangedso that all the S's are together?11. |
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| 13. |
) In how many ways can the letters of MAHABHARAT be aranged so that) B and T are never togetheriu) M. A, T. H occurs at first four places |
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Answer» Total no of arrangements will be 10!/(4!*2!)Total no of arrangements in which b & t are together will be 9!/(4!*2!)Total no of arrangements in which b & t are not together will be 10!/(4!*2!)-9!/(4!*2!)= (10! - 9!)/(4!*2!) is it correct why ! this sighn |
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| 14. |
orson gets 50% of the0. Rs 3500 is to be shared among three people so that the first person gets 5second, who in turn gets 50% of the third. How much will each of themAe |
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| 15. |
73,500 is to be shared among three people so that the first person gets 50% of thesecond person who in turn gets 50% of the third person. How much will each ofthem get? |
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| 16. |
4. 3,500 is to be shared among three people so that the first person gets 50% ofsecond person who in turn gets 50% of the third person. How much will each of thatget? |
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| 17. |
Two person A and B toss an unbiased coin alternatelyon the understanding that the first who gets the headwins. If A starts the game, find their respective chanceof winning. |
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Answer» 'A' can win in odd trials. Let the probability of A getting heads be 'p' So '1-p' is the probability that 'A' loses. If 'A' wins in 1st trail then it is simply = p for 'A' to win in 3rd it has to lose in 1st two and win in 3rd = (1-p)^2 *p..and so on. So prob of A winning = p + (1-p)^2*p + (1-p)^4*p+... = p [1+(1-p)^2 + (1-p)^4+... ] p=1/2 So, probability of 'A winning' = 1/2 * [4/(4-1)] [summing the geometric series] = 2/3 Thus, probability of 'B' winning is 1/3 |
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| 18. |
3. Find the square roots of 100 and 169 by the method of repeated subtraction |
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| 19. |
Divide by repeated subtraction:427 |
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| 20. |
(d) Find 9 by repeated subtraction method. |
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Answer» The square root of 9 is 3. NowStep 1:9 - 1 = 8Step 2:8 - 3 = 5Step 3: 5 - 5 = 0 |
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| 21. |
2. Avijan can do a piece of work in 10 hours and Alankar can do the same job in 15 hourHow long will they take to do the same work if they work together? |
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Answer» If A can complete a work in x days and B can complete the same work in y days, then, both of them together can complete the work in x y/ x+ y days. Here, the No. of hours required to complete the work , working together = 10×15/10+15 = 150/25=6 hours |
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| 22. |
22.If the letters of the word ASSASSINATION are arranged at randomn, find the probability that aA's are not coming together. |
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Answer» The no. of arrangements in which all A's come together =11!/4!2!2! ∴∴Probability of all A's coming together =11!4!2!2!/13!/4!3!2!2!=11!×3!/13! =1/26 |
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| 23. |
8The salaries of A, B and C are in the ratio2:3:5. If A's salary is increased by 15%,B's salary is decreased by 10% and C'ssalary is increased by 20%, then thenew ratio of their salaries is |
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Answer» A:B:C= 2:3:5 (15/100)×2+2 : (10/100)×3+3 : (20/100)×5+5 (30/100)+2 : (30/100)+3 : (100/100)+5 (3+20)/10 : (3+30)/10 : 6 The answer is- 2.3 : 3.3 :6 The new ratio of their salaries is 23:27:30 the new ratio of their salaries is 23:27:30 2×115/100 : 3×90/100 : 5×120/100 = 230:270:600 = 23:27:60 |
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| 24. |
for higher education Trisha burrows rupees 9600 from the post office for2 1/2 years at the rate of 9% how much interest and amount would see pay back at the end of the term? |
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Answer» For SIMPLE INTERESTSI = P*R*T/100Given P = 9600, R = 9%, T = 5/2 SI = 9600*9*5/200 = 48*45 = 2160 Thus she would have to pay interest of Rs 2160 or Total amount = 9600 + 2160 = Rs 10760 |
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| 25. |
a job pays $56 for 8 hours of work. how much money does the job pay per hour? |
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Answer» pay for per hour=$56/8=$7 |
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| 26. |
e e T Rt 12 Tप्रश्न हो. यदि (0 2० 2 हो कोणज्ञात करें ।& के अन्य त्रिकोणपितीय अनुपात(20 2L O |
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Answer» Here is your solution... given :- tanA=4/3 we already know that tanA=P/BFrom Pythagorean theorem we get.. H²=P²+B²H²=4²+3²H²=16+9H²=25H²=5²H=5 SinA=P/HCosA=B/H from that SinA= 4/5CosA=3/5 |
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| 27. |
e s 2N7 Py ?उमा मर हो;g 2y -g eRt |
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Answer» capture the Clear photo. |
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| 28. |
I Sl R Ao, Rt L T eण 12 : यदि किसी &.0. के प्रथम 14 पदोंतो 20वाँ पद ज्ञात कौीजिए।का योग 1050 है तथा इसका प्रथम पट |
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Answer» a=10...given S14=1050⇒n/2[2a+(n-1)d]=1050⇒14/2[20+13d]=1050⇒7[20+13d]=1050⇒20+13d=1050/7⇒20+13d=150⇒13d=150-20⇒13d=130⇒d=10 20th term=a+19d =10+19×10 =10+190 =200...Answer |
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| 29. |
5. 3 months salary of Sohan is Rs 3870. Every month he spends Rs 30 on books, Rs 480 on food and Rs 300 on cloth. Hoin one year? |
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| 30. |
the present value is9. The value of a machine depreciates every yearmachine be Rs 100000, what will be its value after 2 years?100 annually If the present pour |
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| 31. |
Thevalue of a machine depreciates every year by 5%. If the presentathe machine be Rs 100000, what will be its value after 2 years?9. |
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| 32. |
a) Gracy took a loan of Rs 4000 to buy a net. She paidRs 345 every month for one year. How much money dicpay back to the Bank?12 |
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| 33. |
How many 3-digit even numbers can be formed from the digits 1.2.digits can be repeated? |
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Answer» Well 3 digit numbers formed by 1,2,3 can be repetitive or non repetitive type If repetition of any number is allowed: Then 3³ = 3x3x3 = 27 possibilities Suppose xyz is 3 digit number then For x we have 3 possibilities, for y 3 possibilities and for x again 3 possibilities if repetition is allowed so possible numbers = 3x3x3 = 27 Numbers are 111, 112, 113, 121, 122, 123, 131, 132, 133 211, 212, 213, 221, 222, 223, 231, 232, 233 311, 312, 313, 321, 322, 323, 331, 332, 333 Total = 27 |
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| 34. |
Jhansi and her sister took a loan of Rs 21,000 to buy a log!boat. They paid back a total of Rs 23,520 in one year. Howmuch did they pay back every month? |
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| 35. |
How many 3-digit even numbers can be formed from the digits 1,2,3,4,5,6 ifthedigits can be repeated? |
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| 36. |
repetition of the digits is alltn) repetition of the digits is not allowedHow many 3-digit even numbers can be formed from the digits 1.2.3.4,s |
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| 37. |
How many 3-digit even numbers can be formed from the digits 1, 2, 3,4, 5, 6 if thedigits can be repeated? |
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| 38. |
12. How many even numbers greater than 300 canbe formed with the digits 1, 2, 3, 4, 5 if repetitionof digits in a number is not allowed? |
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| 39. |
It can take 12 hours to fill a swimming pool ufor 4 hoyrs and the pipe of smaller diameter for 9 hours, only half the pool can be filled. How longwould it take for each pipe to fill the pool separately?sing two pipes. If the pipe of larger diameter is useu |
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| 40. |
a*(r*(r*(o*(w*(0*(-3*x/5 %2B 1)^(1/x)))))) |
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Answer» answer is - 1. |
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| 41. |
\frac{3 x+1}{2}>5, x \in \mathbf{W} |
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| 42. |
Simplify each expression ald Ild1. 5x-7(2-4x-red |
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Answer» 5x - 7 (2 - 4x)5x - 14 + 28x33x - 14 |
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| 43. |
it number and the number obtained by reversing the order of its digits 1s0 (5. 0) and (7, 7) form ahenildhh the adehealLR14, The sum of a two-dig165. If the digits differ by 3, find the number.ou (n(? |
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| 44. |
2. Evaluate the following by using Identity-l.(0 (101)-(ii) (52)(iv) (203)( (410)quare of binomial akm, i.e. b, minust(vi)can verify the abo(10.27Identity-1/ |
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Answer» A natural disaster is a major adverse event resulting from natural processes of the Earth; examples are floods, hurricanes, tornadoes, volcanic eruptions, earthquakes, tsunamis, and other geologic processes |
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| 45. |
gidentity,find the product of the following1.\begin{array}{l}{(y+4)(y+6)} \\ {\left(x^{2}+7\right)\left(x^{2}-5\right)} \\ {\left(m^{2}+7\right)\left(m^{2}-5\right)}\end{array}1 (x+(iv4) m'n2+(vi |
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| 46. |
Hint : wie1+ scc A sinA(Hint: Simplify LHS and RHs(iv)1-cosA + cot A, using the identity |
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| 47. |
xercise 1Vlect a suitable identity and find the followingpxo3k + 4) (3k+4) ( (ax(i) (ax2+ by2)(ah(iv) (m2-n2) (m' |
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Answer» thanks |
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| 48. |
polynomial : 5x3 +4x2+7(iii) Factorise the following using appropriate identity: x2-10,(iv) What is the name of each part of the plane formed by horizontal and vertical lines? |
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| 49. |
(8.) what number should9. State whether each of the following statements is true or false.The difference of two rational numbers is always a rational nam2 3 3 2i 5 5 5 3w 1 is the additive identity for rational numbers.(iv) Subtraction is commutative on rational numbers.(0) There exists a rational number which is its own additive inverse19 -3 19 3vi) 5115 11 |
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Answer» I don't know this answer sorry which one of them sorry I can't identify 1 true2false3false4false5true6true |
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| 50. |
of the book. Who28. Lalita read 30 pages of a book containing 100 pages while Saritareadread more?3o evercised for a longer time? |
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