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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 8451. |
Check wheather the pair of linear equation x +3 y -6=0 and 2x + 17 y - 13 =0 is consistent |
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Answer» Consistent Consistent |
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| 8452. |
Root 5 is a rationla number prove that |
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| 8453. |
Sin theta - cos theta +1 / sin theta + cos theta - 1 = 1/ sec theta - tan theta |
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| 8454. |
Quadritac formula |
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Answer» -b+✓b²-4ac/2a -b +_ √b²-4ac / 2a -b±√b²-4ac/2a |
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| 8455. |
If Tan A/ Tan B = n and Sin A / Sin B = m. Then show that cos A =√(mn) ^2+m^2-n^2-1/n^4-1 |
| Answer» Okk | |
| 8456. |
Find whether x=5 is the root of the equation x² -13x +40=0 |
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Answer» p(x)=x²-13x+40=0P(5)=5²-13×5+40=0=25-65+40=0=-40+40=0=0=0Thus,it is the root of the equation. If x= 5 is the root of the equation x² - 13x +40 , then the value of whole equation should be 0....So,Let x=5, then,(5)² - 13*5 + 40 = 025-65+40 =025-25=00=0Hence, x=5 is the root of the equation. |
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| 8457. |
For what value of linear equation does has infinitly many solutions of equation ax-3y =1? |
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| 8458. |
Write down the decimal expansion of 16/3125 |
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Answer» 0.00016 First take LCM of 31253125=5⁵Now multiple by 2⁵ (16*2⁵/5⁵*2⁵)16 *32/10⁵512/10⁵0.00512 answer |
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| 8459. |
√345 |
| Answer» 18.57 | |
| 8460. |
I have got 80 / 80 in my preboard ? |
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Answer» Wow Nice Kisss subject me Weldone?????????????????????????????? Me too in maths |
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| 8461. |
Prove that: tanA+tanB/cotA+cotB = tanA.tanB |
| Answer» TanA•tanB(TanA + tanB)/tanA+tanB | |
| 8462. |
Prove that 2underroot 3 - 4 is an irrational no |
| Answer» Let us considered that 2√3-4 is rational no. That is, it can be written in the form of p/q where p and q are co-primes and q is not equal to 0.Let, "a" be the required rational no. That implies, 2√3-4=a2√3=a+4√3=a+4/2We know that "a" is rational no. That is, a+4/2 is also rational, but √3 is irrational. Which means that, Irrational is not equal to rational Hence, 2√3-4 is irrational Proved!! | |
| 8463. |
For θ=30°, verify that : Sin2θ=2tanθ/1+tan²θ |
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Answer» From RHS ≈2tan theta /1+tan² theta≈2tan30/1+tan²30≈2×1/√3/1+(1/√3)²≈2/√3/4/3≈6/4√3≈6/√3/12≈√3/2From LHSSin2 thetaSin2(30)Sin60√3/2 LHS =RHSHence proved sin2*30°=2tan30°/1+tan30°*tan30° |
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| 8464. |
1/a+b+c=1/a+1/b+1/c .....solve for x |
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Answer» No the question is right Take lcm 1/x(a+b+x)=1/abX a+b-x/x(a+b+x)=a+b/abX cut by x-a+b/x(a+b+x)=a+b/abNow-a+b cut by a+b-1/x(a+b+x)=1/abCross multiple-ab=x(a+b+x)-ab=ax+bx + x^2-ab=x(a+b)+x^2Take ab to right sideX^2+(a+b)x+ab=0 By quardic formula-b+/-√b²-4ac/2a(You can see formula from book)Now but values-a-b +/-√(a+b)²+4*1*ab/2Put identity of (a+b)²-a-b+/- √a²+b²+2ab-4ac/2-a-b+/-√a² +b²-2ab/2-a-b +/-√(a-b)²/2 Now take +ve -a-b+a-b/2A cut by a-2b/2X= -bTake -ve-a-b-a+b/2B cut by b-2a/2X= -a So the values for X = -a , -b If ur question is like this then it is ur ans....1/a+b+x=1/a+1/b+1/xNow take 1/x to left sideThen ,1/a+b+x-1/x=1/a+1/bTake lcmon both side Because if you don\'t have x in ur question then how u can solve it for xI think the ques can be like this ....1/a+b+x=1/a+1/b+1/x Hii I think ur question is wrong |
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| 8465. |
What is the definition of statistics |
| Answer» It is a branch of mathematics that deals with graph, assumption, probability, and growth rate etc. | |
| 8466. |
If A>B then sinA >sinB |
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| 8467. |
Evaluate :sin 60 degree and 45 degree by geometrical method |
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| 8468. |
The sum of the zeros of the polynomial 5y²_14y+8 will be |
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Answer» Sum = -b/a = -(-14)/5 = 14/5// 14/5 Can you please simplify the question properly |
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| 8469. |
If a polynomial has no zero, does it mean it has no solution ? |
| Answer» No , it\'s mean that polynomial is a numerical function | |
| 8470. |
Please suggest the best YouTube channel for real no and linear equation explanation. |
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| 8471. |
Write All the formulas of chapter =Trigonometry Ratio |
| Answer» sin = opposite/hypotenuse.cos = adjacent/hypotenuse.tan = opposite/adjacent.cosec=1/sin.sec = 1/cos.cot = 1/tan.sin^2+cos^2=1.1+tan^2=sec^21+cot^2=cosec^2. | |
| 8472. |
The hcf of two numbers a and b is 5 and their Lcm is 200.Find the product Ab |
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Answer» 1000 1000 Product of number=hcf×lcmab=5×200=1000 |
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| 8473. |
What is Section formula. |
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Answer» x=m1x2+m2x1/m1+m2 y=m1y2+m2y1/m1+m2 x=mx2+nx1/m+n .y=my2+ny1/m+n Section formula is applicable when you have given a point on a line and with it\'s dividing ratio then you can find the co-ordinates of the given point For x -M1X2 + M2X1÷ m1+M2For y - m1y2+m2y1 ÷ M1+m2 x=m1x2+m2x1/m1+m2 y=m1y2+m2y1/m1+m2 |
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| 8474. |
Probability of a event can never be ? (a) zero. (b) one(c)less than zero. (d)more than one |
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Answer» More than one D Zero and less than zero |
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| 8475. |
Triangle all solution |
| Answer» Using theorm prove that the line joining the mod points of any two sides of a triangle is parallel to third side | |
| 8476. |
360 oranges are distributed among a certain number of boyd |
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| 8477. |
If (x square + y square) (a square+ b square) =(ax + by)^2. Prove that x/a = y/b |
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Answer» We have,(x^2+y^2)(a^2+b^2)=(ax+by)^2Prove that, \\dfrac{x}{a}=\\dfrac{y}{b}.∴ (x^2+y^2)(a^2+b^2)=(ax+by)^2⇒ x^2(a^2+b^2)+y^2(a^2+b^2)=(ax)^2+(by)^{2} +2(ax)(by)Using algebraic identity,(x+y)^{2}=x^{2}+y^{2}+2xy⇒ x^2a^2+x^2b^2+y^2a^2+y^2b^2=a^2x^2+b^2y^{2} +2abxy⇒ x^2b^2+y^2a^2=2abxy⇒ x^2b^2+y^2a^2-2abxy=0⇒ (xb)^2+(ya)^2-2(xb)(ya)=0Using algebraic identity,(x-y)^{2}=x^{2}+y^{2}-2xy⇒ (xb-ya)^2=0⇒ xb - ya = 0⇒ xb = ya⇒ \\dfrac{x}{a}=\\dfrac{y}{b}, proved.Hence, \\dfrac{x}{a}=\\dfrac{y}{b}, proved. (x²+y²) (a²+b²)= (ax+by)²(a²x²+b²x²+a²y²+b²y²)=(a²x²+b²x²+2abxy)b²x²+a²y²=2axbyb²x²+a²y²-2axby=0(bx-ay)²=0bx-ay=0Therefore, y/b=x/a |
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| 8478. |
maths homework help me |
| Answer» How | |
| 8479. |
If the nth term of the AP -1, 4 ,9 14 ............. is 129 find the value of n. |
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Answer» Givena = -1an = 129d = 5We know that, an = a + (n-1)d129 = -1 + (n-1)5130 = 5(n-1)n-1 = 130/5n-1 = 26*n = 27* N=27 |
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| 8480. |
Give chapter wise all formulas |
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Answer» https://byjus.com/maths/maths-formulas-for-class-10 Pls read the book Which subject |
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| 8481. |
Pls give all chapter wise all formula |
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Answer» ? Copy link? https://byjus.com/maths/maths-formulas-for-class-10/ |
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| 8482. |
I have Mathematics (Standard) so, I can use which Guide For Study ? |
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Answer» Oswall and together with sample paper (100% mark) Evergreen Only study with ncert book If you want to gain 95 above Rd sharma is the best option ever RS Agarwal is best |
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| 8483. |
Find the co-ordinate of a point P on the line segment joining A(1,2) and B(6,7) such that AP=2/5AB. |
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Answer» =P(3,4) =P (3,4) |
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| 8484. |
Best sample paper of maths Please send me link! |
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Answer» Arihant Together with is best |
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| 8485. |
Can anybody tell me the marking scheme of chapters in maths? please ? |
| Answer» Abe nahi milti . board kabhi nahi deta | |
| 8486. |
Explanation of theorem 10.1 and 10.2 |
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| 8487. |
6.4 is coming ( class 10) |
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Answer» It\'s not deleted ? Yes |
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| 8488. |
A cylindrical vessel open at the top |
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| 8489. |
If the ratio of corresponding sides of two triangles is 4:9 then the ratio of their areas is |
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Answer» Ratio of the areas is square of the ratio of the corresponding sides Suppose there are two triangle ABC and PQR.if AB/PQ=4/9Then (ABC)/ar (PQR)=(4/9)^2=16/81 |
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| 8490. |
Determine the modal weight |
| Answer» Tally, please? | |
| 8491. |
in the given figure D and E trisect BC.prove that 8AE Square=3AC Square +5AD square |
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| 8492. |
Find the HCF 144 and 198 |
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Answer» HCF of 144 and 198 is 18 18 =18 144=2×2×2×2×3198=2×33×332 |
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| 8493. |
If we draw any line from the centre of the circle to the tangent, then find the angle between them |
| Answer» 90^o. | |
| 8494. |
What is marks for arithmetic progression in class 10 2021 board exam? |
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Answer» 4-3=1 First of all 1 marks me puch leta hai uske baad 3me Yeah Fir 4 marks me |
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| 8495. |
How to solve sums which are given in form of ratios |
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Answer» (3)square2 :(4)square2 =9:16 or 3and 4 By taking the ratios in the x formFor example : given 3:4 Let 3x and 4x |
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| 8496. |
All lesson formulas |
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| 8497. |
-33*6+55 |
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Answer» -143 -33*6+55=-143 is answer ok -143 -143 -143 |
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| 8498. |
find the point on x axis which is equidistant from the points 2,5 and -2,9 |
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Answer» Let the point be P(X,0)And A(2,5) , B(-2,9) Since, PA=PB Therefore, PA^2 = PB^2Distance of PA without Root = DISTANCE OF PB without RootSolve the equation , You\'ll get X= 7 or -7 K=1 Pls someone one reply in brief with formula also |
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| 8499. |
How questions come in 10th Board exam? Easy or hard? |
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Answer» Both We don\'t know Easy Both ?? |
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| 8500. |
My exam will come after 2 month so ,what is best doing on this time |
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Answer» Prectise and revise Smart work Revision Thanks Revision |
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