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. |
11./fn Δ ABCand Δ DEF. ABEDE, AB 11 DE, BCEFand BC II EF. Vertices A, B and C are joined tovertices D, E and F respectively (see Fig. 8.22)Show that0) quadrilateral ABED is a parallelogram(ii) quadrilateral BEFC is a parallelogram(ii) AD II CF and AD CFFig. 8952(iv) quadrilateral ACFD is a parallelogranm(v) AC DF(vi) Δ ABC= Δ DEF.igog |
| Answer» | |
| 2. |
Fig 8.211. In Δ ABC and Δ DEF. ABDE' ABIDE, BCEFand BC II EF. Vertices A, B and C are joined tovertices D, E and F respectively (see Fig. 8.22).Show that0 quadrilateral ABED is a parallelogram(ii) quadrilateral BEFC is a parallelogram(iii) AD II CF and AD CF(iv) quadrilateral ACFD is a parallelogram(v) AC DFFig. 8.22 |
| Answer» | |
| 3. |
11. 1n Δ ABC and Δ DEF, ABDE, AB 11 DE, BCEFand BC II EF. Vertices A, B and C are joined tovertices D, E and F respectively (see Fig. 8.22).Show that130 quadrilateral ABED is a parallelogram(ii) quadrilateral BEFC is a parallelogram pao(ii) AD IICF and AD CFFig. 8.22(iv) quadrilateral ACFD is a parallelograma a t(v) AC DF(vi) Δ ABC= Δ DEF. |
|
Answer» thanks |
|
| 4. |
11. In Δ ABC and Δ DEE AB-DE, AB 11 DE, BC-EFand BC II EF. Vertices A, B and C are joined tovertices D, E and F respectively (see Fig. 8.22).Show thatquadrilateral ABED is a parallelogram(ii) quadrilateral BEFC is a parallelogram(iii) AD 11 CF and AD CF(iv) quadrilateral ACFD is a parallelogram(v) AC-DF(vi) Δ ABC Δ DEF.Fig. 8.22 |
| Answer» | |
| 5. |
In Δ ABC and Δ DEF, AB DE, AB 11 DE.BC EF and BC II EF. Vertices A, B and Care joined to vertices D, E and Frespectively (see Fig. 7.22). Show that(i) quadrilateral ABED is a parallelogram(ii) quadrilateral BEFC is a parallelogram(iii) AD 11 CF and AD CF(iv) quadrilateral ACFD is a parallelogram(v) AC DF(vi) Δ ABC Δ DEF.Fig. |
| Answer» | |
| 6. |
Each floor of a high rise building is fittedwith 20 doors. There are 12 floors in eachbuilding. There are 25 such buildings in acomplex. The total number of doors fittedin the complex is _____A. 2400B. 3000C.6000D. 5000 |
| Answer» | |
| 7. |
Each floor of a high rise building is fittedwith 20 doors. There are 12 floors in eachbuilding. There are 25 such buildings in acomplex. The total number of doors fittedin the complex is _____A. 2400C. 6000B. 3000D. 5000 |
| Answer» | |
| 8. |
पे हज - %iy o *2/ oo ey ”’I ‘/) eo- 4] ~ |
|
Answer» hit like if you find it useful |
|
| 9. |
7. निम्न रैखिक समीकरणों के युग्मों, को हल कीजिए: px+qy=p-gq (i)qQ-py=p+yq |
| Answer» | |
| 10. |
Practice Set 15.6Radii of the circles are given below, find their areas.(1) 28 cm(2) 10.5 cm (3) 17.5 cm |
|
Answer» area of circle=πr^2=22/7×28×28=22×4×28=88×28=2464rest of the same use the formula formula=d/228/2=1410.5/2=5.2517.5/2=8.7517.5/2=10.5/2 "Area of circle'' R1=28cmArea =πr2 =22/7×28×28 =2464cm2 R2=10.5cmArea =22/7×10.5×10.5 = use the area of radius formula then u get the answer....and....do examples....u can get the correct steps and solution also understand r=28cmA=πr^2 =22/7×28×28 =2464cm^2r=10.5A=22/7×10.5×10.5 =346.5cm^2 1.area=2464cm^22 area=346•5cm^23 area 962•5 cm^2 use formula area of circle= πr^2π=22/7 first wala ka answer 2464 area of circleR1=πr2 =22/7*28*28 =2464cm*2464cm R2 =10.5cmarea =22/7*10.5*10.5 =346.5cm*346.5cm R3=17.5cm area=22/7*17.5*17.5 =962.5cm*962.5cm 1)2464 sq cm2)346.5 sq cm3)962.5 sq cm 2464 , 346.5 , and. ,962.5 is the answer (1)2,464sqcm(2)346.5sqcm(3)962.5sqcm are the correct answers 1 246sq cm 2 346.5 sq cm 3 962.5 sq cm ans. 2464 square centimetres |
|
| 11. |
7. The period of sine wave is.02 seconds. Its frequency is(a) 20 Hz(b) 30 Hz(c) 40 1Iz(d) 50 Hz |
| Answer» | |
| 12. |
Radii of the circles are given below, find their areas.(1) 28 cm (23 10.5 cm (3) 17.5 cm |
| Answer» | |
| 13. |
निम्नलिखित को सत्यापित कोजिएहै. a0B e |
| Answer» | |
| 14. |
Practice Set 15.6Radii of the circles are given below, find their areas.(1) 28 cm(2) 10.5 cm(3) 17.5 cm |
| Answer» | |
| 15. |
e - a0 जज—————————-—'—b——_fke_v_k__&w_f b, = ( (O |
| Answer» | |
| 16. |
12. In the adjoining figure, O is the centre of a circle, XY is adiameter and XZ is a chord. Prove that XY > XZ[Hint. Join OZ. Then, OX + OZ > XZ → XY > XZ.]110 |
|
Answer» Pata nahi mujhe salo kameeno mujse kyu puch rahe ho |
|
| 17. |
EIf x: y-38 and yz-4:9 find xz |
| Answer» | |
| 18. |
सनक की के; का ना Ao7 2, RGO x +y= 5 % और रद ¥ y_z न2को हल रहर |
|
Answer» thank you |
|
| 19. |
way the property:-xxlyxz) = (xxy) xz by taking 2:31974 xxY) xz dytw |
|
Answer» x*(y*z)=7/3*(12/5*4/9)=7/3*(4/5*4/3)=7*16/3*15=112/15and(x*y)*z=(7/3*12/5)*4/9=112/15hence verified |
|
| 20. |
Inthegivenfigure POLAB, If xz 1:3:5, then find the degree measure of x, y and z |
| Answer» | |
| 21. |
Hence, xz +yz-zxy.Find the sum of each of the followi1. 8+4/2+4+2/2+... oo |
| Answer» | |
| 22. |
3. The numbers X, Y, Z are such that XY 96050 & XZis greater than Z by one. Find out the number Z?95625&Y |
| Answer» | |
| 23. |
8. In the figure, YQ L XZ and ZP L XY, alsoy'Q ZP. Find three pairs of correspondingparts which make AYQZ AZPY by RHScongruence rule.154 |
| Answer» | |
| 24. |
In a survey it was found that 21 people liked prodúct A, 26 liked product B and29 liked product C. If 14 people liked products A and B, 12 people liked productsC and A, 14 people liked products B and C and 8 liked all the three products.Find how many liked product C only |
|
Answer» Let A, B and C denote the set of people who like products A, B and C respectively.Then it is given that 21 people like product A, i.e. n(A) = 21.Similarly, we have n(B) = 26 and n(C) = 29.Now, 14 people like both A and B, so this means n(A \cap B) = 14.Similarly, n(C \cap A) = 12, n(B \cap C) = 14 and n(A \cap B \cap C) = 8.The number of people who liked just product C is given by =n(C) – n(C \cap A) – n(B \cap C) + n(A \cap B \cap C)( you can also create venn diagram for the same, the formula will be clearer in that case)= 29-12-14+8= 11.Hence,11 people liked only product C. thnk uhh |
|
| 25. |
V What do you mean by LPP?) Solve the following by graphical methoMaximize z = 2x1 +5x2subject to the constraints5x1 +6x2 2303x1 + 2x2 521x1 + x2 512Xz, xz 20 |
|
Answer» LPPstands for Linear Programming Problems. It is a method to achieve the best outcome (such as maximum profit or lowest cost) in a mathematical model whose requirements are represented by linear relationships. Linear programming is a special case of mathematical programming. what is lpp Results in English व्हाट इस लप्प हिन्दी में नतीजे Search Results Featured snippet from the web LPPstands for Linear Programming Problems. According to Wikipedia. It is a method to achieve the best outcome (such as maximum profit or lowest cost) in a mathematical model whose requirements are represented by linear relationships. Linear programming is a special case of mathematical programming. LPPstands for Linear Programming Problems. According to Wikipedia. It is a method to achieve the best outcome (such as maximum profit or lowest cost) in a mathematical model whose requirements are represented by linear relationships. Linear programming is a special case of mathematical programming. |
|
| 26. |
newspaper.In a survey it was found that 21 people liked product A, 26 liked product B and29 liked product C. If 14 people liked products A and B, 12 people liked productsC and A, 14 people liked products B and C and 8 liked all the three products.Find how many liked product C only.16.et Bthen |
| Answer» | |
| 27. |
In a survey it was found that 21 people liked product A, 26 liked product B and29 liked product C. If 14 people liked products A and B, 12 people liked productsC and A, 14 people liked products B-and C and 8 liked all the three products.Find how many liked product C only.) 7 |
|
Answer» 11liked C only |
|
| 28. |
urvey it vas found that 21 people liked product A, 26 liked product B and29 liked product C. If 14 people liked products A and B, 12 people liked productsC and A, 14 people liked products B and C and 8 liked all the three productsFind how many liked product Conly.Suunmaryntor deals rith some basic definitions and operations involving sets. The |
| Answer» | |
| 29. |
In a survey it is found that 21 people likes product A,26Likes product B and 29 people likes product C if 14 peA and B, 12 people likes C&A, 14 people likes B anall three products.find That How Many People likes8ople likes |
| Answer» | |
| 30. |
If (a +b+c)>0 and a0 b c, then the equationa(x -b)(x -c)+ b(x- c)(x- a)+c(x - a)(x - b) 0 has(A) real and distinct roots(C) product of roots is negative(B) roots are imaginary(D) product of roots is positive |
|
Answer» The roots are real a(x−b)(x−c)+b(x−c)(x−a)+c(x−a)(x−b)=0a(x−b)(x−c)+b(x−c)(x−a)+c(x−a)(x−b)=0 ⟹a[x2−(b+c)x+bc]+b[x2−(c+a)x+ca]+c[x2−(a+b)x+ab]=0⟹a[x2−(b+c)x+bc]+b[x2−(c+a)x+ca]+c[x2−(a+b)x+ab]=0 ⟹(a+b+c)x2−2(ab+bc+ca)x+3abc=0⟹(a+b+c)x2−2(ab+bc+ca)x+3abc=0 D=4(ab+bc+ca)2−4(a+b+c)(3abc)D=4(ab+bc+ca)2−4(a+b+c)(3abc) =4(a2b2+b2c2+c2a2+2a2bc+2ab2c+2abc2−3a2bc−3ab2c−3abc2)=4(a2b2+b2c2+c2a2+2a2bc+2ab2c+2abc2−3a2bc−3ab2c−3abc2) =4(a2b2+b2c2+c2a2−a2bc−ab2c−abc2)=4(a2b2+b2c2+c2a2−a2bc−ab2c−abc2) =2(2a2b2+2b2c2+2c2a2−2a2bc−2ab2c−2abc2)=2(2a2b2+2b2c2+2c2a2−2a2bc−2ab2c−2abc2) =2[(ab−bc)2+(bc−ca)2+(ca−ab)2]=2[(ab−bc)2+(bc−ca)2+(ca−ab)2] ⟹D≥0∀a,b,c∈R⟹D≥0∀a,b,c∈R Ifx=a=b=cx=a=b=c, we haveD=0D=0 |
|
| 31. |
o7(3); =% 59ÂĽ~ 4) : |
|
Answer» (3y²+5y-4)-(8y-y²-4)=3y²+5y-4-8y+y²+4=4y²-3y=y(4y-3) |
|
| 32. |
Shruti bought 2.95 m dress material for her mother and 4.65 m for her sister. How much drmaterial did she buy?5. |
|
Answer» total dress material2.95m+4.65m=7.60m |
|
| 33. |
s oKk o7 Yok o |
|
Answer» Explanation : 135 = 3×3×3×5 225 = 3×3×5×5 HCF = 3×3×5 = 45 Solution : 45 If you find this answer helpful then like it. |
|
| 34. |
Lalita wants to buy a border material for her saree. The shopkeeperthat a roll of 25 metres of the border material would cost her 700. Lalitjust 9 metres of border. How much does she have to pay the shop |
|
Answer» Cost of 25 metres = Rs. 700Cost of 1 metre = 700/25 = Rs. 28Cost of 9 metres = 28*9 = Rs. 252 PLEASE HIT THE LIKE BUTTON |
|
| 35. |
When simplified(2/3 is |
|
Answer» = (-1/27)-2/3= [(-1/3)3]-2/3= (-1/3)-2= 1 / (-1/3)2= 1/ (1/9)= 9 |
|
| 36. |
xx3xx can be simplified as |
|
Answer» Answer is 1/5 power of x |
|
| 37. |
2. What is the simplified form of |
|
Answer» √7/8 is the correct answer of the given question |
|
| 38. |
vTitC(a) CH,-CCHCH |
|
Answer» 2-methyl-propene |
|
| 39. |
WHAT IS THE SIMPLIFIED VALUE OF[cValtv7) = (VT-va] ? |
|
Answer» [ ( 41+7 ) ÷ ( 41-7 ) ] = 0 1 is the answer of this question because similar value division answer is 1 (√41-√7)² is answer by using identity (a-b)²=(a-b)(a+b) the answer is 34 by using the formula of (a+b) (a-b) = a^2 - b^2... the answer of the question is 0 when divide these terms then answer will be obtained 1 ravan ke pitaji ka naam kya hai 1 is the answer because dividing these no. we get 1 1 i̸͟͞s̸͟͞ t̸͟͞h̸͟͞e̸͟͞ a̸͟͞n̸͟͞s̸͟͞w̸͟͞e̸͟͞r̸͟͞ firstly we know, divide is the inverse of multiplication, then we can write (√41 + √7)-----------------(√41 - √7 ) then (√41 + √7) (√41 + √7 ) ----------------- x -----------------(√41 - √7 ) (√41 + √7 ) upper make the formula of (A +B) 2and downward (A2 - B2) 41 + 7 + 2√41√7-------------------------- 41 - 7 48 + 2√287---------------- 34 24 +√287--------------- answer 17 1 is the answer of this question root 41+ root 7 ------------ root 41 -root 7 root 41 + root 7 × root 41 +root 7__________________________ root 41- root 7 × root 41 +root 7 (root 41 +root 7) power 2 ____________________ 34 it will be 0 because + intu -= 24/7)+(2*(287)"1/2))/17 (24 + √287)/17 ans hoga Rationalisation kr ke solve kr sakte hai 17/17√287 is correct answer 1 is the simplified answer |
|
| 40. |
(13)L. Write the simplified form of:(13) |
| Answer» | |
| 41. |
81x^4/y^-8has simplified value equal to |
| Answer» | |
| 42. |
el' what is the simplified value of (81)-÷ (81)1? |
| Answer» | |
| 43. |
(b) Write (22)3 x 36 in simplified exponential form. |
|
Answer» Your correct answer is (2*2)³* =643*3*3*3*3*3*=72964*729=46,656 46,656 is the correct answer of the given question |
|
| 44. |
A stone is dropped into a quiet lake and waves move in circles at the speed of swhen the radius of the circular wave is 8cm, how fast is the enclosed area is increasing |
|
Answer» this is a solution for a similar ques, only the numerical values are different. |
|
| 45. |
A stone is dropped into a quiet lake and waves move in circles at the speed of 5cm / sec. Atwhen the radius of the circular wave is 8em, how fast is the enclosed area is i |
|
Answer» Step 1:Given :drdt=5cm/s and radius=8cmArea of the circle is πr2Differentiating w.r.t t on both sides we get,dAdt=2πrdrdtStep 2:Substituting for r and drdt we get,dAdt=2×π×8×5=80πcm2/sHence the enclosed area is increasing at the rate of 80πcm2/s |
|
| 46. |
of 4 cm/sec. AtA stone is dropped into a quiet lake and waves move in circles at a speedthe instant when the radius of the circular wave is 10 cm, how fast is the enclosed areaincreasing?24. |
|
Answer» plz send me again |
|
| 47. |
CHWrite the IUPAC name of H3C-CH-CH CH2Cl |
|
Answer» 2-chloro-3-methyl butane |
|
| 48. |
. Select from the following a groupof electrical appliances in which(1) Electric bell, electric iron,(2) Electric generator, electric(3) Electric motor, electricmagnets are used.electric buibmotor, electric beillgenerator, electric furnace4) Electric generator, electric bell,electric heater |
|
Answer» Magnets are used in electric generator,electric motor and electric bell.(option 2) |
|
| 49. |
3. In the adjoining figure, ABCD is a trapeziumin which ABIDC. If <A = 55° and <B = 700find ZC and LD.55°700 |
| Answer» | |
| 50. |
en figure.lines PO and RS intersect at pointO. If âł-53°, find all ober anges2 |
|
Answer» angle 3 = angle 1 = 53° ( vertically opposite angle) So, angle 1 + angle 4 = 180° angle 4 = 180° - 53° = 127° angle 2 = 127° ( vertically opposite angle) |
|