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. |
What is the day 1 week and 6 daysafter May 12 |
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Answer» if may 1 is Tuesday1 week ie May 8th will be Tuesday and six days then it will be Sunday |
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| 2. |
9 20Find the equation of the ellipse whose foci are (t4,0) and eccentricity is |
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| 3. |
Find the equation of the ellipse whose foci are (:4,0) and eccentricity is |
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Answer» sir again tell me |
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| 4. |
) one focus is (-1, 1), directrix is x-y+3-0 and eccentricity is 2 |
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Answer» The focus is (-1,1). Directrix is x-y+3=0 and e =1/2. Let P(x₁,y₁) be any point on the ellipse, then SP² = e²PM² where PM is perpendicular distance from x-y+3=0 (x₁+1)² + (y₁-1)² = 1/4 [(x₁-y₁+3)/√(1+1)]² 8(x₁+1)² +8 (y₁-1)² = (x₁-y₁+3)² 7x₁²+2x₁y₁+7y₁²+10x₁-10y₁+7=0 Locus of (x₁,y₁) i.e., the equation of the required ellipse is 7x²+2xy+7y+10x-10y+7=0 |
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| 5. |
52. A solution is to be kept between 50° F and 68° F What is the range of temperature in °CifCelcius-farhenheit conversion formula is:F C +325 |
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Answer» and |
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| 6. |
2x2-3x+ 3-4x22xIn thi23x36x3.2 |
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Answer» question is not clear enough |
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| 7. |
Q.3.Differentiation of 2x2 + 3x w.r.t. x is :(1) 4x +3(2) 4x(3) 3 |
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Answer» Option (1) 4x+3 is correct answer. 1) 4x + 3 is the correct answer 2) 4x is the correct answer 4x + 3 is correct answer |
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| 8. |
1. Find the discriminant of quadratic equation 3/2x2-3x-18-0 |
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Answer» Discriminant = bxb - 4aca = 3sqroot(2), b = - sqroot(3), c = - sqroot(18) Discriminant = 3 - 4x(3sqroot(2))(-sqroot(18))= 3 + 4x9x2= 3 + 72= 75 |
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| 9. |
Construct a parallelogram MNPQ in which MP = 3.8 cm, NQ= 4.5 cm and the angle between MP andNQ is 60° |
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Answer» thanks |
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| 10. |
4. If 5x-2y = 7 and xy = 2, find the value of (5x + 2y?2 |
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Answer» pls give me a correct answer for this question |
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| 11. |
(iii) x2 – 3x + 2X2 - 1 |
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Answer» (x-2)/(x-1) is the correct answer of the given question |
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| 12. |
डा छ- उप": (05 -{o"nq o |
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Answer» Let theta = x LHS:sin^2 x - sin^2 x. cos^2 x/cos^4 x = sin^2 x(1 - cos^2 x)/ cos^4 x = sin^2 x. sin^2 x/cos^4 x = sin^4 x/cos^4 x = tan^4 x = RHS Hence proved |
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| 13. |
the Fig 4.128, LM I NQ and LNEPO IE MP-MNFind ar (ALMN) : ar (AQNP)Fig. 412s |
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Answer» Sol:Given LM || NQ ⇒ ∠1 = ∠4 [Alternate interior angles cut by transversal MN] Again, LN || PQ⇒ ∠2 = ∠3 [Alternate interior angles cut by transversal MN]∴ ΔLMN ~ ΔNPQ [AA criterion of similarity]Area of ΔLMN / Area of ΔNPQ = MN2/ NP2But MP = 1/3 MN⇒ NP = 2/3 MNArea of ΔLMN / Area of ΔNPQ = MN2/ NP2= MN2/ (2/3 MN)2= (3/2)2= 9/4. |
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| 14. |
find equation of the ellipse whose one vertex is 3,1 and nearer focus is 1,1 and eccentricity 2/3. |
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Answer» Consider x^2/a^2+y^2/b^2=1the distance from the vertex to the focus is 2therefore, a-ae=2but e=2/3 and thus a=6 We also knowb^2=a^2(1-e^2)b^2=6^2(1-2^3/3^2)b^2=20Thus if the centre is at the origin, the ellipse would be x^2/36+y^2/20=1But your ellipse is shifted to the left by 3 and up by 1 therefore, your ellipse's equation is(x+3)^2/36+(y-1)^2/20=1 |
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| 15. |
find the equation of ellipse whose focus is(1,0) eccentricity of directrices x+2y-4=0? |
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Answer» give me my question ans |
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| 16. |
༤ e |1+ Cosâx e1+ Cos2x |
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| 17. |
aor24. 3 fer(Tita,τη(Maximum) z= 5x + 3y倆(Subjected to) 3x +5), < 1 5 ; 5x + 2y-10 ; x, y2(Or), TTTTTF,τη (Minimize) z =-3x + 4y啊fa, (subjected to) x + 2y-8 ; 3x + 2y < 12 ; x 20, y 20 |
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| 18. |
Find the number of real solutions of |
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Answer» thank |
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| 19. |
2x+2y=22y-x=1 |
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Answer» 2x+2y = 2.....(i)2y - x = 1.....(ii) (i) - (ii) => 3x = 1=> x= 1/3. y = 1 - x=> y = 2/3 PLEASE HIT THE LIKE BUTTON |
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| 20. |
f one solution of the equation 3x2 - 8x 2k+1 0 is seven times the other. Find the solutionsand the value of k. |
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Answer» 3x²-8x+2k+1 a=3, b=-8 ,c=2k+1suppose the zeroes of the equation are α and β . by the given condition α=7βas we know , α+β=-b/a7β+β=-(-8)/38β=8/3β=8/3×1/8=1/3αβ=c/a7β×β=2k+1/37×1/3×1/3=2k+1/37/9=2k+1/321/9=2k+121/9-1=2k12/9=2k4/3=2k4/6=k2/3=k thanks |
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| 21. |
daily temperature recorded in °C at Delhi during the first week of May, 2011 was as under42, 42.5, 40.5, 41, 43.5, 40.5, 44 |
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| 22. |
+2)(x2 -16Find the sum of all the real solutions of the inequality2-9)x+2)(X |
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Answer» Here x²+2 and x⁴+2 are always ✓ . also √x²-16 should also be ≥ 0, because there can't be any negetive term inside root , so, x²-16≥ 0 => x²≥ 16 ... or x = (-∞,4] U [4,∞) now, to make the expression ≤0x²-9 < 0 => x²<9 => x belongs to (-3,3) but taking intersection of both the terms we get only two solutions as -4 and 4 .. because at -4 and 4 , it will become = 0 so, sum of solution is -4+4 = 0 unable to understand |
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| 23. |
Convert the numerical express in tree diagram(5 x 6) + (2 x 4) |
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Answer» + / \ × × / \ / \ 5 6 2 3 |
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| 24. |
. on a horizontel plane there is a verHeal dewerwith a flesgs tetf on the top of the tower. At apoint 3m awayfom the foot of the dower, theangte of elevatton of the top and the hottom ofthe flaapole are 6o 30° Yes pectively . find the heightof the Udower and the flegrele mounted on ităand the Fley pele mourn |
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| 25. |
wn 300 times and the outcomes are noted as given belowOutcomeFrequency60725442 39When a die is thrown at random, what is the probability of getting a0 32(ii) 6?(ii) 52(iv) 1? |
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| 26. |
The equation of the ellipse whose one of thevertices is (0, 7) and the corresponding directrix isy= 12, is |
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| 27. |
Find one solution of the equation x + 2y = 6. |
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Answer» Given equationx + 2y = 6y = (6 - x)/2 For x = 2,y = (6 - 2)/2 = 4/2y = 2 Therefore, one solution is (2, 2) one solution is (1,5/2) |
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| 28. |
LICISE 24.1directrix3 x 2y+501. Find the equation of the ellipse whose focus is (,-2), theand eccentricity equal to 1/2.f the ellipse in the following cases: |
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| 29. |
12. The equation log,a 16+og2x 64 3 has(A) one irrational solution(C) two real solutions(B) no prime solution(D) one integral solution |
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Answer» by hit and trial we can se that x=4 will give as log(4²)16 +log(2*4)64 = 1+2 = 3 so , 1 solution is X = 4. and other answer is 1/√2.so, option A,B,C and D are correct. Actually all the answers are correct. |
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| 30. |
write one solution for 2(x-1)+3(y+5)=17 |
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Answer» One solution is x = 2 and y = 0 2 ( 2 - 1) + 3 ( 0 + 5) 2 × 1 + 3 × 5 2 + 15 17 = RHS |
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| 31. |
1. Find the equation of ellipse if its focus is (6, 7.directrix +y+2-0 and eccentricity is |
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| 32. |
directrix is the lineSAMPLE-4Find the equation of the ellipse whose for= 0 and eccentricity 1/2T01PIECE: April May 2011 OME |
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| 33. |
Construct an angle of 90° at the initial point of a given ray and justify the coiilinitial point of a given ray and justify the co1. |
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| 34. |
3.A MNP, NQ is a bisector of ZN2.5InIf MN 5, PN 7 MQ 2.5 thernfind QPFig. 1.37 |
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| 35. |
2.5In A MNP, NQ is a bisector of Z N.If MN 5, PN 7 MQ 2.5 thenfind QPFig. 1.37 |
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| 36. |
Express x in the terms of y for the equation 3x+4y=7 |
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| 37. |
A)Ex)s and o (xy)6 then ECy) i |
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Answer» E(X) + (XY) = E(XY)=5 + 6 = 11 |
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| 38. |
16.Ifx + yand xy6,the value of (x) +y) is: |
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Answer» x^3+y^3= 9+4= 13 |
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| 39. |
A card is drawn at random from a well-shufledcards. Find the probability that the card drawn is t of szor an ace, (ii) a black king, (ii) neither a jack nor a kieardking or a queen.deckis (i) aof 52ng, (vjauotall nossible outcomes52 |
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Answer» 1)number of possible outcomes= 13+3=16probability of getting a spade or ace=16/52=4/132)number of possible outcomes=2probability of getting a black king=2/52=1/263)number of possible outcomes=52-4-4=44probability of getting neither a king nor queen=44/52=11/134)number of possible outcomes=4+4=8probability of getting either a king or a queen=8/52=2/13 |
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| 40. |
to the sum of all terms that follow it.13. IF S denotes the sum of an infinite G.P. and S, denotes the sum of the squaresthen prove that the first term and common ratio are respectivelypectively s?andSiS |
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| 41. |
if 3x+2y=12 and xy=6 ,find the valie of 9x +4y |
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Answer» 3×2+2×3=12 and 2×3=6,find the value of 9×2+4×3=30 |
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| 42. |
I 11.If 2x + 3y = 15 and xy = 6, find the value of 4x2 + 9y2. |
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| 43. |
Find the length o the dlameter aCceFind the radius of the area of a circle if its circumference is 18Ď cm.2area is 144 tcm |
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Answer» Circumference of circle =2πr18π=2rπ18=2rr=18/2r=9CMarea of circle is πr^2π×(9)^2π×8181πcm^2 |
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| 44. |
draw a graph X+xy=6 and from find the value of X when y=-3 |
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| 45. |
For which value of p, (2, 2) is a solutionof the equation 3x +4y-2p 0? |
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Answer» Given : (2,2) is solution of 3x + 4y - 2p = 0 Therefore, put x = 2 and y = 2 3 × 2 + 4 × 2 - 2p = 0 6 + 8 = 2p 2p = 14 p = 7 |
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| 46. |
Find the value of a from the equation 3x + 4y = aIf its one solution is x = 2, y = 1.4. |
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Answer» if X=2 y=1then 3x+4y=3(2)+4(1)=6+4=10hence a=10 |
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| 47. |
(a) 20 cm(b) 15 cm:14. The area of a rectangle is 460 cm2. If the length is 15% more than the breadth, what is the breadth of :the rectangle?(a) 15 cm(b) 36 cm(c) 34.5 cm(d) 20 cm |
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| 48. |
313.Find the largest number that divides 2053 and 96and leaves a remainder of 5 and 7respectively. |
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Answer» It is given that on dividing 2053 by the required number there is a remainder of 5 .this mean that 2053 - 5 = 2048 is exactly divisible by required number . similarly,967- 7 = 960the required number is the largest number satisfying the above property .therefore ,it isthe HCF of 2048 & 960HCF of 2048 & 960 is 64hence required number is 64 |
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| 49. |
f 4x + 5y23 and xy6, find the value of 16x2 + 25% |
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Answer» (4x+5y)^2=16x^2+24y^2+40xy(23)^2=16x^2+25y^2+40(6)529-240=16x^2+25y^2289=16x^2+25y^2 Answer is 289 why u take 24 |
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| 50. |
Onr-fifth of a litremi |
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Answer» 1 Litre is 1000mL os1/5 th of 1000mlis 200ml thanks a lot |
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