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InterviewSolution
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.
| 37401. |
Sin(50+dheta) - cos(40-dheta) |
| Answer» Sin(90-40-dheta)-cos(40- dheta).=cos(40-dheta)-cos(40-dheta) | |
| 37402. |
For the quadratic equation x^2-2x+1=0 find the value of x+1/x |
| Answer» x+1/x=2The value of x is 1 | |
| 37403. |
If lcm of 12 and 42 is 10m + 4 find the value of m ? |
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Answer» Your answer is 8. Am i right 8 |
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| 37404. |
Can anybody tell me all the formulas that are included in the chapter - Trigonometry |
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Answer» You better prefer your book (NCERT). You have to prefer ncert book |
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| 37405. |
How can 3 + 3 = 8 |
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Answer» Don\'t know? By mistake...? Pata nahi |
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| 37406. |
Will there be two types of paper one is basic and other is general???? |
| Answer» | |
| 37407. |
2xsquare+2 + 3x+2 = ? |
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Answer» 2x^2+3x+4=0 There are no possible roots for polynomial 2x^2 + 3x + 4 ?? |
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| 37408. |
A quadratic polynomial whose zeroes are -3 and 4 A) x^2-x+12B)x^2+x+12C)x^2/2-x/2-6D) 3x^2+2x -24 |
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Answer» A) is the correct answer Answer please |
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| 37409. |
Which of the sequence 20,19 1/2, 18 1/2, 17 3/4 is the first negative term |
| Answer» The given sequence is an A.P. in which first term a = 20 and common difference d =\xa0{tex}-\\frac34{/tex}Let the nth term of the given A.P. be negative thenT\u200b\u200b\u200b\u200b\u200b\u200bn\u200b\u200b\u200b\u200b\u200b < 0a+(n-1)d<020+(n-1)({tex}-\\frac34{/tex})<0On multiplication by 4 we get80-3n+3<083-3n<083<3nOr 3n>83{tex}n > \\frac{83}{3}{/tex}n > 27.67Hence 28th term will be first negative term | |
| 37410. |
Write the coordinates of a point P on x- axis which is equidistant from the point A(-2,0) and B(6,0) |
| Answer» Let the required point P(x,y).Clearly ,we have PA=PBPA^2=PB^2(x+2)^2+(0-0)^2=(×-6)^2+(0-0)^2x^2+4+4x=x^2+36-12x16x=32X=2 hence the coordinate of P(x,y)=(2,0) | |
| 37411. |
Solve for x,y 1/2 (x+2y)+5/3 (3x-2y)=-3/2,5/4 (x+2y)-3/5 (3x-2y)=61/60 |
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| 37412. |
Find a cubic polynomial whose zeroes are 3, 5 and -2. |
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Answer» Let\xa0{tex}\\alpha,\\mathrm\\beta\\;\\mathrm{and}\\;\\mathrm\\gamma{/tex}\xa0be the zeroes of the given polynomial.\xa0Then, we have\xa0{tex}\\alpha{/tex}\xa0= 3,\xa0{tex}\\beta{/tex}\xa0= 5 and\xa0{tex}\\gamma{/tex}\xa0= -2\xa0Hence{tex}\\alpha + \\beta + \\gamma{/tex}\xa0= 3 + 5 - 2 = 6 ...............(1){tex}\\alpha \\beta + \\beta \\gamma + \\gamma \\alpha{/tex}\xa0= 3(5) + 5(-2) + (-2)3 = 15 - 10 - 6 = -1 ................(2){tex}\\alpha \\beta \\gamma{/tex}\xa0= 3(5)(-2) = -30 .............(3)Now, a cubic polynomial whose zeros are {tex}\\alpha , \\beta{/tex}\xa0and\xa0{tex}\\mathrm\\gamma{/tex}\xa0is equal top(x) = x3\xa0-\xa0{tex}( \\alpha + \\beta + \\gamma ) x ^ { 2 } + ( \\alpha \\beta + \\beta y + \\gamma \\alpha ) x - \\alpha \\beta \\gamma{/tex}On substituting values from (1),(2) and (3) we get{tex}\\mathrm p(\\mathrm x)=\\mathrm x^3-(6)\\mathrm x^2+(-1)\\mathrm x-(-30){/tex}= x3\xa0- 6x2 - x + 30 3x^3-5x^2-2x |
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| 37413. |
Find value of k does the pair of equations below has unique solution y-x=6 3kx+2y=7 |
| Answer» For unique solution, -1÷3kis not equal to 1÷2.Hence k is not equal to -2÷3 | |
| 37414. |
Root 5 is an irrational number |
| Answer» Yup | |
| 37415. |
Ch_5. Exercise:-5.3 Q.4 |
| Answer» | |
| 37416. |
if Sn the sum of first n term of an AP is given by Sn=3nn-4n find the nth term |
| Answer» Nth term=Sn-S(n-1) | |
| 37417. |
Find hcf of 13and15 |
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Answer» Since the factors of 13 and 15 are 1 hence the fhcf is 1 Hcf is highest common factor and there is no common factor other than 1 there So hcf is 1 Sorry lcm is 195 But hcf is 1????? 1 HCF of 13 and 15 is 1. 195 |
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| 37418. |
What are the types of linear equation. |
| Answer» Point-slope form, standard form, and slope-intercept form. | |
| 37419. |
Underroot x upon y plus underroot y upon x is equal to 10 upon 3. Find the value of xy. |
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| 37420. |
I want practise test paper for 1,2,3,4 chpters |
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Answer» Padhna aata nhi phle padh toh le likha kya Don\'t use phone So you go and practise for test paper |
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| 37421. |
In a triangle abc< c =3< b =2( |
| Answer» Let angle b be= x. So, angle c be 3x . angle a be x/2.A+B+c =180.X/2+x+3x = 180. X/2+4x=180.(do through out multiplication of 2 in eqn).X+8x=360. 9x=360. X =40.Putting the value of x in a and b and c.a= 40÷2=20. b = 40 . c= 40(3) = 120. | |
| 37422. |
Show elimination method problems |
| Answer» First you compare both equation (X or Y) and then eliminate and solve | |
| 37423. |
Prove that 2 is an irrational number |
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Answer» Let root 3 is rational number. root3 =p/q ( where, p and q are integer , q is not equal to 0 and p and q are co-primes ).root 3q = p.Squaring both sides.3p2=q2 (q square and p square)...... (i).3 divides p2.3 divides p.......... (ii).p2 = 3q2.p2 =3m.Put the value of p2.p2=3q2.(3m)2=3q2.9m2=3q2.3m2=q2.q2=3m2.3 divides q2.3 divides q.......... (iii).By eqn (ii) and (iii) 3 divides p and 3 divides also q.3 is the common factor of p and q. This is contradiction because our assumption is wrong. Hence, root 3 is irrational number. 2 or root 2 |
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| 37424. |
What is the syllabus for class 10 first term |
| Answer» Check syllabus here :\xa0https://mycbseguide.com/cbse-syllabus.html | |
| 37425. |
What us face card |
| Answer» | |
| 37426. |
Harshi paii kaha gaye ....??? |
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Answer» Bbye guys gd nyt sweet dreams Or sab vadiya bhai Accha Raunak Pandey Apka shubh naam |
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| 37427. |
Express the hcf of 1650 and 847 as a linear combination of 1650 and 847 |
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Answer» Fck Oooooo |
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| 37428. |
If two zeroes of plynomial f(x) =x^4-6x^3-26x^2+138x-35 are 2+-root 3 |
| Answer» Divide the f(x) with the product of two of its given zeroes and the fractorise the quotient by mid term splitting. | |
| 37429. |
Formulas of ch 3 |
| Answer» Check revision notes to check formulae :\xa0https://mycbseguide.com/cbse-revision-notes.html | |
| 37430. |
(1+cot+tan)(sin-cos) |
| Answer» LHS = (1 + cot A + tan A)(sin A - cos A)= sin A - cos A + cot A sin A - cot A cos A + tan A sin A - tan A cos A=sin A - cos A +\xa0{tex}\\frac{cos A}{sin A}{/tex}\xa0{tex}\\times{/tex}\xa0sin A - cot A cos A + tan A sin A -\xa0{tex}\\frac{sin A}{cos A}{/tex}\xa0{tex}\\times{/tex}\xa0cos A=sin A - cos A + cos A - cot A cos A + tan A sin A - sin A=sin A tan A - cot A cos A=RHS. | |
| 37431. |
Solution of exampler in maths chapter 3 |
| Answer» Check NCERT solutions here :\xa0https://mycbseguide.com/ncert-solutions.html | |
| 37432. |
10mcq |
| Answer» | |
| 37433. |
Maths lab manual activities |
| Answer» | |
| 37434. |
Sin0 |
| Answer» 0 | |
| 37435. |
What is value of sin 1 |
| Answer» | |
| 37436. |
Sin © |
| Answer» Sin by cos | |
| 37437. |
How to prove rational numbet |
| Answer» | |
| 37438. |
Write the discriminant of the quadratic (x+5)2=2(5x-3) |
| Answer» Given a quadratic equation :x² + bx + c = 0The discriminant is given by:d = b² - 4acWhere a , b and c are constants.From the question we have :(x + 5)² = 2(5x - 3)x² + 10x + 25 = 10x - 6Collecting the like terms together we have :x² + 10x + 25 - 10x + 6 = 0x² + 31 = 0In our case :b = oc = 31a = 1Doing the substitution we have :d = - 4 × 1 × 31 = -124= -124 | |
| 37439. |
In an A.P., if a=15,d=-3 and a n =0,then find the value of n |
| Answer» n=6 | |
| 37440. |
What will be the number of real zeroes of the polynomial x^+1 |
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| 37441. |
Solve x^2+x^6-x^7 & Higher Degree |
| Answer» | |
| 37442. |
Find the gcd by Euclid method ( 44 , 233) |
| Answer» H. C. F is 2 | |
| 37443. |
Find the zeroes of polynomial p(x)=.√3x2+10x+7√3 |
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| 37444. |
1÷2x-1÷y=-1, 1÷x+1÷2y=8 wherexnot equal to 0and y not equal to 0 |
| Answer» | |
| 37445. |
What was the role of women in civil disobedience movement ? |
| Answer» Large scale participation of women was an important feature of the Civil Disobedience Movement. During the Salt March, thousands of women came out of their homes to listen to the speeches of Gandhi. women\xa0participated in protest marches, manufactured salt, and\xa0picketed foreign cloth and liquor shops. Many went to jail. While women of high caste families participated from urban areas,\xa0in rural areas they came from rich peasant households.\xa0But this did not bring about any radical changes in the positin of women. For a long time the Congress was reluctant to allow women to hold any position of authority within the organisation. | |
| 37446. |
What is the easy way to understand substitution method |
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| 37447. |
A=2,d=9,an= |
| Answer» | |
| 37448. |
Find the 10th term of the Arithmetic progressions : 2,7,12,... |
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Answer» 10 th term is 47 A=2,d=7-2=510th term=a+(n-1)d2+(10-1)52+9×52+4547 |
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| 37449. |
Find mean class. 0-100,100-200,200-300,300-400,400-500 and frequency is 12,15,18,7,8 |
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Answer» Yes this is the right answer223.3 223.3333333333333 |
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| 37450. |
Factorisation |
| Answer» In mathematics, factorization or factoring consists of writing a number or another mathematical object as a product of several factors, usually smaller or simpler objects of the same kind. For example, 3 × 5 is a factorization of the integer 15, and is a factorization of the polynomial x² – 4. | |