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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. |
If 30% of x is 450. Find x. |
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Answer» 30% of x = 45030/100 × x = 450x = (450×100)/30x = 1500 Thanks for help me |
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| 2. |
a7. If I spend x paise a week, how many rupces do I save out of ayearly income of Rs y? |
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| 3. |
l. A piece of string is 30 cm long. What will be the length of each siis used to form: |
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Answer» Thanku |
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| 4. |
Find the ratio of the followinga) 25 rupees to 100 rupees |
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Answer» the ratio of 25 rupees to 100 is 25:100 ratio will be25/100 = 1/4that is 1:4 thnx |
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| 5. |
24. Solve for(2x3)-3) =5, given that x-3, x*12 |
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Answer» 2(2x-1/x+3)-3(x+3/2x-1)=5or, {2(2x-1)²-3(x+3)²}/(x+3)(2x-1)=5or, {2(4x²-4x+1)-3(x²+6x+9)}/(2x²+6x-x-3)=5or, 8x²-8x+2-3x²-18x-27=5(2x²+5x-3)or, 5x²-26x-25=10x²+25x-15or, 5x²-10x²-26x-25x-25+15=0or, -5x²-51x-10=0or, 5x²+50x+x+10=0or, 5x(x+10)+1(x+10)=0or, (x+10)(5x+1)=0Either, x+10=0or, x=-10Or, 5x+1=0or, 5x=-1or, x=-1/5∴, x=10,-1/5 Ans. |
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| 6. |
ही 5 Angle of o Sectos A 2R ave. s qu-‘u;",;!f कह रक्त है asea and सिव्िडट 2?= |
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Answer» Let the center of circle be O.Let the radii of the sector be OA and OB.Given∠AOB = 60°. In theΔAOB, OA=OB, So it is isosceles. => ∠OAB = OBA = [180° -∠AOB ] /2 = 60°Hence,ΔAOB is equilateral. Hence, AB = OA = 14 cm. Area ofΔAOB =√3/4 * R²Area of sector OAB =π R² * (60°/360°) =π R² / 6 Area of minor segment AB : πR²/ 6 -√3/4 R² = 22/7 * 14² /6 - √3 /4 * 14² cm² = 17.75 cm² |
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| 7. |
Using appropriate properties, find:-2Ă3.5-31 |
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Answer» -2/3*(3/5)+(5/2-3/5)*1/6-2/5+5/2-3/10LCM of 5,2 and 10= 20 (-8+50-6)/2036/2018/109/5 |
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| 8. |
Asea of a Squane 9s 616Cmtindl its diagonalsgc |
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Answer» not by diagram by question will you give answer plz area of a square is 676cm2 then find its diagonal |
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| 9. |
Q.30 The determinant of matrix A is 5 and the determinant of matrix B is 40. The determinant ofmatrix AB is |
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Answer» Determinant of matrix AB will bedeterminant of A* determinant of B 5*40 = 200so answer = 200 |
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| 10. |
34.7 Examples1 -11.Find the determinant of A --3 1 |
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Answer» Determinant of A=1(1)-(-3)(-1)=1-3=-2 |
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| 11. |
DETERMINANTPROBLE| Problems with marks are so2. Evaluate the following determinant(i) lo a ba b o |
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Answer» hit like if you find it useful |
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| 12. |
1) Find the value of given5 -2determinant: |
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| 13. |
Ex.1Find the value of the determinant2 31 |
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| 14. |
2)If the value of the determinantis 31 find m.1-57 |
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Answer» Determinant of |m 2| |-5 7| 7m - (-5*2) = 317m - (-10) = 317m = 31 - 10 = 21m = 21/7 = 3 Therefore,Value of m = 3 answer is 37m+10=317m=21m=3 determinant of |m 2| |-5 7|7m - (-5×2) = 317m -(-10) = 31 7m+10=317m= 31-107m=21m=21/7so,m = 3 If simultaneous equations do not have any solution then their graphical interpretation contains …….A) Parallel lines B) Coincident linesC) Intersecting lines |
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| 15. |
A kite is flying at the height of 40 m from earth, with the help of a 80 m long cord. Assuming that there is no looseness in the cord, what will be the angle of direction of kite on earth? |
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| 16. |
21.)What is the price in rupees of 1000 apples, when the cost of ascore is x paise? |
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| 17. |
difference between tangent and cord |
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Answer» Tangent : A line that touches Circle at only one point. Chord : A Chord is a line segment that joins any two points of the circle. The endpoints of this line segments lie on the circumference of the circle. |
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| 18. |
meter of a regular pentagonisll. A piece of string is 30 cm long. What will be the length of each side if the stringis used to form :ilateral triangle?(c) a regular hexagon? |
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| 19. |
1.1.1 Deflnition of Determinant t |
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Answer» In linear algebra, the determinant is a value that can be computed from the elements of a square matrix and encodes certain properties of the linear transformation described by the matrix. The determinant of a matrix A is denoted det(A), det A, or. | A. |
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| 20. |
if the cost of 13 metre of cloth is rupees 450 find the cost of 15 metre of cloth |
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Answer» 13 m = 450then 1m= 450/13so, 15 m= (450/13)×15 = 519.24 |
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| 21. |
how to find rank of determinant??? |
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Answer» The maximum number of linearly independent vectors in amatrixis equal to the number of non-zero rows in its row echelonmatrix. Therefore, tofindtherank of a matrix, we simply transform thematrixto its row echelon form and count the number of non-zero rows thank you |
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| 22. |
How to find determinant of matrix |
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Answer» thanks |
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| 23. |
1.Using appropriate properties findx(-3)-6x2+14Ă2 |
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Answer» i) -2/3 × 3/5 + 5/2 - 3/5 × 1/6 = -2/5 + 5/2 - 1/10 = (-4+25-1)/10 = 20/10 = 2 ii) 2/5 × (-3/7) - 1/6 × 3/2 + 1/14 × 2/5 = -6/35 - 1/4 + 1/35 = -5/35 - 1/14 = -1/7 - 1/14 = -3/14 |
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| 24. |
Explain the properties of a determinant |
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| 25. |
(1) Find the value of the determinant |
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| 26. |
8-2 Solve equation fer and ชุ uning subg ttution24 7 |
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| 27. |
Gus 2 Solve the following equation :Dat2=3 in) 24-3=Sat3 ) 22 2=3 iy) Blats)=21 y* 3:7X-2 |
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Answer» 1) 3(x+2)=2(x - 2) 3x+6=2x-4 x=-10 |
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| 28. |
4.2-350(i) Write the cofactor of a,, in the determinant 61 5 - 7 |
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| 29. |
DatePageB isan |
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| 30. |
3.What is the value of the determinant2536 |
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Answer» | 2 3 || 5 6 |=(6×2)-(5×3)=12-15=-3 |
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| 31. |
Example 1. Find the area of a regular hexagonwhose side measures 7 cm. |
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Answer» 127.3 |
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| 32. |
Find determinantt \left| \begin{array}{cc}{4} & {3} \\ {-3} & {2}\end{array}\right| |
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Answer» Determinant of 2×2 matrix will be => ad - bcso, (4×2) - (3×-3) = 17 ( answer) |
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| 33. |
34.A dle is thrown five hundred times and the outcomes 1, 2, 3, 4, 5 and 6 with frequencies aregiven below in the table:OutcomeFrequency 88 85 76 75 86 90Find the probability of getting (a) an even prime number and (b) a number greater than 4 |
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| 34. |
If 15 apples cost 45 rupees. find the cost of 5 apples. |
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Answer» 15 apples=Rs 451 apple=45/15=3therefore cost of 5 apples=3x5=Rs 15 |
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| 35. |
4. If 25 apples cost Rs 65, what will be the cost of 45 apples? |
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Answer» 25 apples = rs 6545 apples = ? 25 / 45 = 65/x 25×x = 65×45 25×x = 2925 x = 2925/25 x= 117 apples. |
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| 36. |
for)13.AB ( Dis a parallelog ran p is any point with in it. The sum of the areas of ΔΡΑ.Α CD is equaltoa)area of parallelogramb) area of parallelogramc)area of parailelogramd) 4 area of paralielogram |
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Answer» The sum of areas of PAB and PCD is equal to area of parallelogram. |
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| 37. |
1.Using appropriate properties findㄧㄧㄨ ャーーー3 5 2 5 6 |
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| 38. |
Evaluate the determinant16x9x122)a) 0b) 1c) 2d) 3 |
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| 39. |
Exercise 1.11. Using appropriate properties fi2 35 31 |
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Answer» -2/5+5/2-1/10= 2 will be the answer |
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| 40. |
0 (a+b) (a - b) (a+ ab+ b) (a-ab+b) |
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Answer» hit like if you find it useful |
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| 41. |
solve:a(x+y)+b(x-y)=a*2-ab+b*2 a(x+y)-b(x-y)=a*2-ab+b*2 |
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| 42. |
of the remaining sheet. (Takel-.4)Saima wants to put aface on the edge of a circular table cover of diameter 1.3m.Find the length of the lace required and also find its cost if one meter of the lace costs15, (Take π:).14)figure which is a |
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| 43. |
4n an 48esceles bzeve that the alhtude of agve mabisect the eb pesiteside.C. |
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| 44. |
ABCD is a parallelogram and O is the midpoint of AB, If the area of parallelogram is 74 sthen find the area of ÎDOC. |
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Answer» Area of triangle DOC =1/2 area of parallelogram ABCD Required area=1/2*74 =37 cm^2 |
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| 45. |
1. Prone that 22-n is divisible by 2 for all positive integer a |
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Answer» This is correct answer |
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| 46. |
parturitionWrite a brief account of the structure and functions of placenta.ects the foetus to the uterus through an umbilical cho |
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Answer» • It is a disc shaped structure which is embedded in the uterine wall of females. • It develops during gestation period. • It contains villi on the embryo's side of the tissue. On the mother's side are blood spaces, which surround the villi. This provides a large surface area for glucose and oxygen to pass from the mother to the embryo. • It is mainly for providing nutrition to the growing embryo.. • It is also helpful in excretion as the waste generated by the developing embryo can be removed by passing or transferring them into mother's blood through placenta. IF YOU FIND THIS ANSWER HELPFUL, PLEASE LIKE IT. |
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| 47. |
The area of a parallelogram is equal to thearea of a square whose each side measures15 m. Find the height corresponding to base25 m in the parallelogram. |
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| 48. |
How much is 75 greater than 4st |
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Answer» 75 - 48 = 27, So, 75 is 27 much greater than 48 |
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| 49. |
If three apples cost Rs 45, how much would five apples |
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Answer» 3 apples=₹451apple=45/3=15so 5 apple=5×15=₹75 3 apple = 45 1appple =45/3=15to find for 5 apple's =5 ×15 =75 : . the cost of 5 appples is 75 Cost of 3 apples = 45rsCost of 1 apple = 45÷3 = 15Cost of 5 apples = 15 *5= 75 Answer = 75 |
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| 50. |
lf three apples cost R 45, how much would five apples cost? |
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Answer» you are in which city sol: the cost is 225 ruppes boy |
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