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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. |
In AP the sum of first n term is3n²/2+13n/2 find the 25th term |
| Answer» 25th term is 80. I hope I am absolutely correct. | |
| 2. |
A dice is thrown 2 times find the probability that 3 will come exactly 1 time |
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Answer» 11/36 1/6 |
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| 3. |
S= n/2 (2a+(n-1)d) use of this formula plss tell |
| Answer» To find sum of given no of AP | |
| 4. |
The sum of 5 term and7 term of an A.P is 52 and it\'s 10 term is 46 .find the A.P |
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Answer» A+4d +a+6d =522a+10d =52-( 1)A+9d =46-(2) ×22a+18d=92 By eliminating, 2a+10d=522a+18d=92- - - -8d=-40 D=5 Calculate it .Easy hai !! Try urself |
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| 5. |
Solve the quadratic equation 1/a+b+x =1/a +1/b +1/x |
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Answer» x= -a or x= -b Welcome |
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| 6. |
6÷2(2+1)= |
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Answer» Bracket first... Yes it\'s 1 not 9 No, But acc to BODMAS it\'s ans must be 1 9 |
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| 7. |
If the equation (1+m2) |
| Answer» | |
| 8. |
Conversation of Pythagoras theorm |
| Answer» Do u mean converse of pythagoras theoram? | |
| 9. |
Find the values of k for which the quadratic equations 9 |
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Answer» Incomplete question Equation Kaha h??? |
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| 10. |
What is metal |
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Answer» It is an element which has to the ability to lose electrons ... It has physical properties like:1.Ductility2. Malleability 3. Lustre 4.Sonority Metal conduct electricity and it is luturous shiny melleable |
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| 11. |
3+3=? |
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Answer» Hey...can I join with u guys I am not able any boys above than friend Sry mane no nahi liya OK then enjoy Or hm bhi leli unka no for chatting Kh rhe the ki arushi unse what\'s up pr baat krti hai Mai bhut thaki hui thi to jaldi so gyi thi sorry... Haaa yr bada badlav dekha hmse bhi Mana kr diya Tum Kal online nahi ayi kyo *mana Ans to batao Kal bhai aaye the 4 bje chatting karne se mama kar diya....khe rhe the study app h... Hi srishti Dara Diya na Hi yr Mai dar gyi ??? |
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| 12. |
What is means of daas |
| Answer» | |
| 13. |
Find the area of the shaded region ;a square of size 6 cm |
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Answer» 6*6=36 ???? happy birthday aasha |
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| 14. |
Prove that sin a+coseca whole squared +cos a +seca whole squared is equal to 7+tansq a+cotsq a |
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| 15. |
If 3 vertices of parallelogram in A(3,-5) , B(7,8) , C(5,-1) . Then find its fourth vertex ? |
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Answer» Draw 2diagonals take point O apply formula (x1+x2)/2. in both diagonals Apply mid point formula to both diagonals and compare midpoints of both diagonals as they will be same as diagonals of parallelogram bisect eacb other . so on comparing you will get the fourth vertics |
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| 16. |
If. tan¶+sin¶ = M. tan¶-sin¶ = N. Prove M sq. - N sq.= 4√m√n |
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Answer» M² - N²=(√tan² θ sin² θ).M² - N²= √ tan ² θ(1-cos² θ).=4 √tan ²θ- tan ²θ cos ² θ.= 4 √tan² θ - sin ² θ.=4 √ ( tan θ + sin θ) ( tan θ- sin θ ).=4 √mn.PROVED. Tan θ + sin θ= M. Tan θ - sin θ= N.M² - N² = (Tan θ + sin θ)² - (Tan θ - sin θ)². M² - N²=(Tan ²θ + sin ²θ + 2 tan θ sin θ )-(Tan ²θ + sin ²θ - 2 tan θ sin θ ).M² - N²=Tan ²θ + sin ²θ + 2 tan θ sin θ-Tan ²θ - sin ²θ +2 tan θ sin θ.M² - N²=4 tan θ sinθ.M² - N²= This is in rd sharma Solve LHS you will got tan¶sin¶ Then solve RHS you will got tan¶sin¶ Hence proved Solve RHS and LHS seperately |
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| 17. |
2x2+3x-1 factories |
| Answer» | |
| 18. |
Find the value of k for which one root of the quadratic equation kx2-14x+8=0is six times the other |
| Answer» Le➰ and 6➰ be the roots of the quadratic equation kx2-14x + 8=0,then?➰+6➰ = - coefficient of x / coefficient of x2 = -(-14)/k?7➰=14/k?➰ = 2/k. ........1 And ➰(6➰) = constantin / coefficient of x2 = 8/k . ......2 6➰=8/kFrom 1 and 2 eq. 6{2/k} square = 8/k k= 24/8 ?k =3 | |
| 19. |
Check whether 6n can end with the digit 0 for any natural number \'n\' |
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Answer» Thanx No 6n doesn\'t ends with no 0 becsuse for ending any no with0 factors should both2 and 5 but 6 hss only factor 2 So it doesnot ends with no 0 It contain prime2 only it does not contain prime5 so by fundamental theorem ,............ |
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| 20. |
Acosx+bsinx=c then prove that asinx-bcosx=√a^2+b^2-c^2 |
| Answer» Just square the given thing and than put the value of sin | |
| 21. |
If the ratio of sum of first ntg term of twi ap are 7n+1/4n+27.then find the ratio of its 9th term? |
| Answer» Let a1\xa0and a2 be the first terms and d1\xa0and d2 be the common difference of the two APs respectively.Let Sn and S\'n be the sums of the first n terms of the two APs and Tn and T\'n\xa0be their nth terms respectively.Then,\xa0{tex}\\frac { S _ { n } } { S _ { n } ^ { \\prime } } = \\frac { 7 n + 1 } { 4 n + 27 } \\Rightarrow \\frac { \\frac { n } { 2 } \\left[ 2 a _ { 1 } + ( n - 1 ) d _ { 1 } \\right] } { \\frac { n } { 2 } \\left[ 2 a _ { 2 } + ( n - 1 ) d _ { 2 } \\right] } = \\frac { 7 n + 1 } { 4 n + 27 }{/tex}{tex}\\Rightarrow \\frac { 2 a _ { 1 } + ( n - 1 ) d _ { 1 } } { 2 a _ { 2 } + ( n - 1 ) d _ { 2 } } = \\frac { 7 n + 1 } { 4 n + 27 }{/tex}\xa0........(i)To find the ratio of mth terms, we replace n by (2m -1) in the above expression.Replacing n by (2 {tex}\\times{/tex}\xa09 -1), i.e., 17 on both sides in (i), we get{tex}\\frac { 2 a _ { 1 } + ( 17 - 1 ) d _ { 1 } } { 2 a _ { 2 } + ( 17 - 1 ) d _ { 2 } } = \\frac { 7 \\times 17 + 1 } { 4 \\times 17 + 27 } \\Rightarrow \\frac { 2 a _ { 1 } + 16 d _ { 1 } } { 2 a _ { 2 } + 16 d _ { 2 } } = \\frac { 120 } { 95 }{/tex}{tex}\\Rightarrow \\frac { a _ { 1 } + 8 d _ { 1 } } { a _ { 2 } + 8 d _ { 2 } } = \\frac { 24 } { 19 }{/tex}{tex}\\Rightarrow \\frac { a _ { 1 } + ( 9 - 1 ) d _ { 1 } } { a _ { 2 } + ( 9 - 1 ) d _ { 2 } } = \\frac { 24 } { 19 }{/tex}{tex}\\Rightarrow \\frac { a _ { 1 } + ( 9 - 1 ) d _ { 1 } } { a _ { 2 } + ( 9 - 1 ) d _ { 2 } } = \\frac { 24 } { 19 }{/tex}{tex}\\Rightarrow \\frac { T _ { 9 } } { T _ { 9 } ^ { \\prime } } = \\frac { 24 } { 19 }{/tex}{tex}\\therefore{/tex}\xa0required ratio = 24:19. | |
| 22. |
All formula of book rs agarval |
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Answer» Thoda saa mehnat krloo Not possible... U can see it there |
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| 23. |
Find the circumference and area of a circle of radius 10.5cm |
| Answer» Circumference - 66 nd area - 346.5 | |
| 24. |
44÷78 |
| Answer» | |
| 25. |
Terminating |
| Answer» Complete the question | |
| 26. |
Lmknn |
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| 27. |
If one zero of p(x)=4x^2-(8k^2-40k)x -9 |
| Answer» | |
| 28. |
Euclid \'s division lemma |
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Answer» a=bq+r a=bq+r, 0=or A=2bq+R ??? |
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| 29. |
How to learn trigonometry |
| Answer» | |
| 30. |
Mean of first ten prime number is |
| Answer» 12.9??????????? | |
| 31. |
The mean of first ten prime number is |
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Answer» Replace n by ten 12.9 is the mean of first n prime numbers |
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| 32. |
Find the number to be added to the polynomial x^2-5x +6 so that 3 is the zero of the polynomial |
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Answer» 0 It is the Zero of the polynomial itself nothing is to be added we can add only 0 to it |
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| 33. |
If the point (p,q) (m,n) and (p-m,q-n) are collinear , show that pn=qm |
| Answer» Use area formula that is:1/2{x1(y2-y3)+(y3-y1)+(y1-y2)}........Then you will get the answer | |
| 34. |
A+b+c |
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Answer» = ABC? ?? D |
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| 35. |
2 sec square thright - 2 sec double square is equal |
| Answer» | |
| 36. |
What is sec |
| Answer» Secant | |
| 37. |
Formula of statics |
| Answer» See in Ncert. | |
| 38. |
Early history of mathematics. |
| Answer» Started from greek | |
| 39. |
2x+5=0 |
| Answer» | |
| 40. |
How is trigonometry get eas? |
| Answer» By practice | |
| 41. |
2%2 |
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Answer» Hello Azeem ? |
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| 42. |
Find the coefficient of x0 in x²+3x+2=0 |
| Answer» 2 | |
| 43. |
Common tangents of two circles of unequal radii are equal. |
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Answer» Tanuj how they are equal? How? They are always equal Naria..... No they won\'t be equal I think equal |
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| 44. |
Draw an isoceles triangle ABC in which AB=AC=6cm |
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| 45. |
How to score good marks in board |
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Answer» By smart and hard work by and hard work Study well By studies.. |
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| 46. |
Find the value of k if the points A(2, 3), B(4, k),and C(6, -3) are collinear |
| Answer» Area of triangle ka formula LGA k area 0 rkh k answer nikl jaayega | |
| 47. |
To find the height of building using a Clinometer |
| Answer» *get | |
| 48. |
Maths ap exercise 5.4 ques 3 |
| Answer» | |
| 49. |
In triangle ABC, X is middle point of AC. If XY//AB, then prove that Y is the middle point of AB. |
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Answer» No..Tanuj It is correct question The given question is wrong\'in triangle ABC,X....................\'if XY is parallel to AB then Y can\'t be a point on AB .Therefore it isn\'t the mid point of AB. By mid point theorem of class 9 |
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| 50. |
x/3+y/4=4,x/2_y/4=1 |
| Answer» | |