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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.
| 7701. |
Prove that 2(sin6 0+cos6 0 )-3(sin4 0 + cos4 0) + =1 |
| Answer» | |
| 7702. |
Tan3 sin 45 ×cos45×sin 30 |
| Answer» 1/8 | |
| 7703. |
Tan 3X sin 45 ×cos 45 ×sin ×30 |
| Answer» | |
| 7704. |
Draw a circle with radius 5cm and draw a tangent |
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Answer» Good one sm ?? ?? Bana liya abb batao kya karein |
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| 7705. |
Prove that d=Sn-KS(n-1)+S(n-2) where n denotes no. ofvterms and S denotes sum of terms |
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| 7706. |
Find 6term form the end of A. P 17, 14,11,.....-40 |
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Answer» -12 2 |
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| 7707. |
Show that (x2+1)2 -x2=0 has no real roots |
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| 7708. |
(X2+1)2-x2=0 |
| Answer» | |
| 7709. |
What is construction ? What do you mean by construction |
| Answer» | |
| 7710. |
Find area of circle whose circumference =22cm |
| Answer» Area of circle : 38.5 cm sq. | |
| 7711. |
(3+√2)+(3-√2)=? |
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Answer» 6 6 |
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| 7712. |
(7+√5)+(7-√5)=? |
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Answer» 14 {tex}\\begin{array}{l}\\left(7+\\sqrt5\\right)\\left(7-\\sqrt5\\right)\\\\By\\;identity\\;:\\;(a+b)(a-b)=\\;a^{2\\;}-b^2\\\\=\\;7^{2\\;}-\\;(\\sqrt5)^2\\\\=\\;49\\;-\\;5\\\\=\\;44\\;\\end{array}{/tex} 44 2 |
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| 7713. |
The sum of three numbers In A.P .is 12 and the sum of their cubes is 288. Find the numbers |
| Answer» Consider the numbers are a , a+d , a+2dGiven that S3\xa0=12⇒ a + a + d + a + 2d = 123(a + d) =12a + d = 4a = 4 - d ------------(1)And sum of their cubes is 288.(a)3\xa0+ (a + d)3\xa0+ (a + 2d)3\xa0= 288a3\xa0+ a3\xa0+d3\xa0+3a2d +3ad2\xa0+a3\xa0+ 8d3\xa0+ 6a2d +12ad2\xa0=2883a3\xa0+ 9d3\xa0+9a2d +15ad2\xa0=2883(4-d)3\xa0+ 9d3\xa0+9(4-d)2d +15(4-d)d2\xa0= 288 [using equation 1]3(64 -d3\xa0-48d +12d2\xa0) + 9d3\xa0+ 9(16 + d2\xa0-8d) d + (60 -15d)d2\xa0= 288192 - 3d3\xa0- 144d + 36d2\xa0+9d3\xa0+ 144d + 9d3\xa0- 72d2\xa0+60d2\xa0- 15d3\xa0= 28824d2\xa0= 288 -19224d2\xa0=96d2\xa0= 96/24d2\xa0= 4d\xa0= ±2\xa0For\xa0d\xa0= 2,\xa0a\xa0= 4 –\xa0d\xa0= 4 – 2 = 2The numbers will be 2, 4 and 6. For\xa0d\xa0= - 2,\xa0a\xa0= 4 - (-2) = 4 + 2 = 6The numbers will be 6, 4 and 2. Hence, the required numbers are 2, 4 and 6. | |
| 7714. |
What is scale |
| Answer» The substance which is used to measure | |
| 7715. |
I want marking scheme for each chapter |
| Answer» Check marking scheme here :\xa0https://mycbseguide.com/cbse-syllabus.html | |
| 7716. |
Who is your fav. Actor? My is hritik roshan |
| Answer» Dilip Kumar | |
| 7717. |
Prove √2√2√2√2.......=2 |
| Answer» | |
| 7718. |
What is ans of 2x+3y=12 |
| Answer» If we put y=0Then x=6And if we put x=0Then y=4Other coordinates are-3,2 | |
| 7719. |
Which type of question will come in exam of 2017-18 for class 10 |
| Answer» Teri maa ka Tumse Hum Thodi Puche the question | |
| 7720. |
What is mean by π |
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Answer» Pie. 3.14 The value of payy is 22/7 .( 3.14) π=22/7 |
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| 7721. |
Find the values of a and b if they are the zeros of the polynomial x²+ax+b. |
| Answer» we have to find the values of a and b, if they are the zeroes of polynomial x2\xa0+\xa0ax + b.Sum of zeroes = {tex}- \\frac { \\text { Coefficient of } x } { \\text { Coefficient of } x ^ { 2 } }{/tex}{tex}\\therefore{/tex}a + b = -aor, 2a + b = 0Product of zeroes ={tex}\\frac { \\text { Constant term } } { \\text { Coefficient of } x ^ { 2 } }{/tex}{tex}\\therefore{/tex}\xa0ab = bor, a = 1then, b = -2 | |
| 7722. |
15+5555 |
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Answer» One of the hardest question for you 5570 |
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| 7723. |
Why is. Maths. So. Tough |
| Answer» Because you dont know anything | |
| 7724. |
What is prime facter |
| Answer» How poor | |
| 7725. |
Questions op ap |
| Answer» | |
| 7726. |
If the point (x,y) is equal distance from the points (a-b,a+b) and (-a-b,a+b) prove that x-a=0 |
| Answer» |PQ| = |PR{tex}\\begin{aligned} \\sqrt { [ x - ( a + b ) ] ^ { 2 } + [ y - ( b - a ) ] ^ { 2 } } = \\sqrt { [ x - ( a - b ) ] ^ { 2 } + [ y - ( b + a ) ] ^ { 2 } } \\end{aligned}{/tex}Squaring, we get[x - (a + b)]2 + [y - (b\xa0- a)]2\xa0= [x - (a - b)]2 + [y - (a + b)]2or, [x - (a + b)]2 - [x - a + b]2\xa0= (y - a - b)2 - (y - b + a)2or, (x - a - b + x - a + b) ( x - a - b - x + a - b)= (y - a - b + y - b + a)(y - a - b - y + b - a)or, (2x - 2a) (- 2b) = (2y - 2b) (- 2a)or, (x - a)b = (y - b)aor, bx = ay.Hence Proved. | |
| 7727. |
How many types of progressions are their |
| Answer» 3 | |
| 7728. |
Use Euclid s method (1) 135 and 225 |
| Answer» 225=135×1+90135=90 ×1+4590 = 45× 2+0HCF= 45 | |
| 7729. |
4 marks |
| Answer» | |
| 7730. |
5÷2 |
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Answer» 2.5 2.5 |
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| 7731. |
If x=p sec theta +q tan theta and y= p tan theta + q sec theta than prove x2-y2=p2-q2 |
| Answer» x^2 - y^2 = (p sec theta + q tan theta)^2 - (p tan theta + q sec theta)^2= p^2 sec^2 theta + q^2 tan^2 theta + 2 pq sec theta tan theta - ( p^2 tan^2 theta + q^2 sec^2 theta + 2pq sec theta tan theta )= p^2 sec^2 theta + q^2 tan^2 theta + 2 pq sec theta tan theta - p^2 tan^2 theta - q^2 sec^2 theta - 2pq sec theta tan theta = p^2 sec^2 theta + q^2 tan^2 theta - p^2 tan^2 theta - q^2 sec^2 theta =p^2 (sec^2 theta - tan^2 theta) + q^2 (tan^2 theta - sec^2 theta)= p^2 (1) + q^2 (-1)= p^2 - q^2Hence proved | |
| 7732. |
Prove BPT |
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Answer» Basic Proportionality Theorem (Thales theorem):\xa0If a line is drawn parallel to one side of a triangle intersecting other two sides, then it divides the two sides in the same ratio.\xa0\xa0\tIn ∆ABC , if DE || BC and intersects AB in D and AC in E then\xa0 AD AE ---- = ------ DB EC\tProof on Thales theorem :\xa0If a line is drawn parallel to one side of a triangle and it intersects the other two sides at two distinct points then it divides the two sides in the same ratio.Given :\xa0In ∆ABC , DE || BC and intersects AB in D and AC in E.\xa0Prove that :\xa0AD / DB = AE / EC\xa0Construction :\xa0Join BC,CD and draw EF ┴ BA and DG ┴ CA.\xa0\xa0\xa0\t |
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| 7733. |
If the points A(k+1,2k), B(3k,2k+3)and C(5k-1,5k) are collinear,then find the value of k qa |
| Answer» We know that area of triangle through collinear points is 0,so now use the formula for area and then solve it after solving you will get the answer as k=2/3,3/2.....put these values of k and check that area is getting 0 or not | |
| 7734. |
Is the value of tansq. +Secsq. Is less than 2 |
| Answer» Yes, | |
| 7735. |
If sin theta is equal to cos theta then find then find the value of theta |
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Answer» Yes its 45..?? 45 degree |
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| 7736. |
Value of tan theta |
| Answer» P/b | |
| 7737. |
How can we find mean if class size are of unequal width |
| Answer» | |
| 7738. |
X -1/x =3 solve by factorization x = not equal to zero |
| Answer» X-1/x=3X-1=3xX-3x=1-2x=1X=-1/2 | |
| 7739. |
What is the folfrom of math. |
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Answer» Meri aatma tumhe hamesha satayegi...... Mental attack to healthy students mathematics |
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| 7740. |
New paper pattern is not there ( question papers) |
| Answer» It\'s there on cbse.Inc.in try it you will get it | |
| 7741. |
Where are we find resent question paper class 10 CBSE 2017 18 |
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Answer» Common sense use kro download karke hi que.pucha h Download mycbseguide app |
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| 7742. |
√1-√1×1+1+1+1-2×0 |
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Answer» 4 3 0 |
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| 7743. |
Jsyegsksve |
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| 7744. |
Trigonomatry |
| Answer» | |
| 7745. |
All Formulas Chapter 12 |
| Answer» | |
| 7746. |
Cos A + 1+sin A = 2 sec A1+sin A Cos A |
| Answer» | |
| 7747. |
Ncert me se kitna paper aayega |
| Answer» 85% | |
| 7748. |
Which term of the AP : 3,8,13,18 .................is 78? |
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Answer» 16 th term78=3+(n-1)575/5=n-1N=16 26 |
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| 7749. |
Is there any sample paper for class tenth 2017_18 |
| Answer» Check Sample Papers here :\xa0https://mycbseguide.com/cbse-sample-papers.html | |
| 7750. |
12+5 |
| Answer» | |