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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.
| 28401. |
If xsinA+ycosA=z,then show that xcosA-ycosA=+-√x²+y²-z². |
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| 28402. |
If xsin³A + ycos³A=sinAcosA and sinA=cosA,show that x²+y²=1 |
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| 28403. |
Exams ki tayari kaisi hai friends |
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Answer» Mst aur aapke Tension bhi h tyari bhi h |
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| 28404. |
Find the area of a sector of a circle with radius 6 CM if angel of the sector is 60 digri |
| Answer» Use theta/360×πr^2 . U will get answer as 28.28cm | |
| 28405. |
An ap first term is 7and its 7term is 19 find its 18 term |
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Answer» 41 is the answer 58 is the answer 41 a+6d=19 isme a=7 put karo aur d find kar lo , jab a aur d pata chal jaye toh 18th trm find kar lo. |
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| 28406. |
Show that one and only one out of n, n plus2, n plus 4 is divisible by 3 |
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Answer» let n be any positive integer and b=3n =3q+rwhere q is the quotient and r is the remainder0_ | |
| 28407. |
The tangents at any point of a circle is perpendicular to radius through the point of contact |
| Answer» The tangents at any point of a circle is perpendicular to radius through the point of contact\xa0 | |
| 28408. |
Solve question no. 3 of user submitted paper ->CBSE CLASS - 10 MATHEMATICS - unit test papers 6 |
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| 28409. |
Will extra question also be there in question paper of cbse board exam 2018-19 or only ncert sums |
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Answer» It will b there....but most of the questions will b frm ncert It means only ncert ones No |
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| 28410. |
D=4,a7=4 find the valeu A |
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Answer» A7=a+6d ==== a + 6(4)=4 ===== a+ 24=4 ======== a= -20 -20 |
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| 28411. |
pythagores throrem |
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Answer» H²=B²+P² H^2=P^2 +B^2 |
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| 28412. |
Find the sum of n terms of the following series:(4-1÷n)+(4-2÷n) +(4-3÷n)+......Please solve it |
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| 28413. |
Solve for xa÷x-b +b÷x-a=2 Please solve this qiestion |
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| 28414. |
how much ncert come in maths board exam |
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Answer» He\'s ryt... ncert is the base...... Do only ncert textbook for this exam...dont even look towards oswaal s chand all in one rd sharma...80%-90% comes from ncert...and rest u can solve by own bcoz base concepts become clear in ncert...??? |
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| 28415. |
(x+2)2 |
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Answer» Su mit ye kesa Q hai 2x+4 |
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| 28416. |
Find the sum of all two digit natural number which when divided by3 yield 1 remainder |
| Answer» 1605 | |
| 28417. |
Cos2A +Cos2A.Cot2A =Cot2A.......(2 is square here ) |
| Answer» cos^2A + cos^2A x cot^2A= cos^2A (1 + cot^2A)= cos^2A x cosec^2A ( since cosec^2A -cot^2A=1)=cos^2A/sin^2A=cot^2A | |
| 28418. |
Vai koi cbse 2019 ka imp maths question bathayega?? |
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Answer» First four cjapters are impprtant as they comparises of 20 marks Mensuration Everything is important |
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| 28419. |
Find the sum of the zerors of the quadratic polynomial 3x²+5x-2 |
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Answer» 3x^2+5x-23x^2+6x-x-23x(x+2)-1(x+2)(x+2) (3x-1)=0x= -2 or 1/3sum = -b/asum = -5/3 -5/3 |
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| 28420. |
Which term of the progrssion 4,9,14,19,.....is 109 ? |
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Answer» an=a+(n-1)d109=4+5d-5105+5=5nn=110÷5=22 22th term 22nd term |
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| 28421. |
I\'m am asking this for scoring 70 above in board exam point of view |
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Answer» But there are some chapters of geometry that chapters may I do only ncert or not For getting 70+ there is no point of view of study , just study all |
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| 28422. |
Which chapters we should do from ncert only and which from reference book pls tell |
| Answer» Oswaal sample papersSuper 20 | |
| 28423. |
Solve for x and y.152x - 378y = -74-378x + 152y = -604 |
| Answer» One time add both equation and one time subtract both equation ,you will get two new equation solve them....... | |
| 28424. |
Find the sum of first 25 terms of an AP whose nth term is given by ax=3x+2 |
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Answer» ax=3x+2a1=a=3(1)+2=5a2=a+d=3(2)+2=85+d=8-, d=3S25=25/2(10+24x3)=25/2(10+72)=25/2 x 82=25x41=1025\xa0 a,d,n, mil jaye toh sum wala formula mein put karo First put x=1 usse a1 aayega phir x=2put karna usse a2 aayega aur phir d nikal lena. 1025 |
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| 28425. |
How to prove that mode of grouped data is l+h(f1-f0)/(2f1-f0-f2) ? |
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Answer» Dono toh wohi hain bus h ka position change hain Your mode formula is wrong So the answer is I+(f1-f0) /(2f1 -f0-f2 )h |
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| 28426. |
Pls post chapterwise mark distribution in math class tenCbse board |
| Answer» Check exam pattern here :https://mycbseguide.com/cbse-syllabus.html | |
| 28427. |
If tan(theta)+sin(theta)=mTan(theta)-sin(theta)=nProve that:m²-n²=4√mn |
| Answer» Separately find m sq. ,n sq. , and mn and then put in lhs nd rhs , it should be proved like this i think so. | |
| 28428. |
Prove that root 5 +3is irrational |
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Answer» Root 5+3 integer not Co-prime Let √5+3 be rational number say p/q where q is not equal to zero and p & q are coprime.√5+3=p/q√5=p/q-3√5=p-3q/q√5 is irrational and p-3q/q is rational.Therefore our supposition is wrong.√5+3 is irrational. |
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| 28429. |
What is the Value of Cosec20\'???Anyone want to play Truth And Dare?? |
| Answer» 2.92 is the value of cosec 20 | |
| 28430. |
Pls ans meFind the values of a and b so that 8x^4 + 14x^3 - 2x^2 +ax + b |
| Answer» Continued question ...is exactly divisible by 4x^2 + 3x -2 | |
| 28431. |
Show that n² -1 is divisible by 8 .If n is an odd positive integer. |
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Answer» Refer to RD Sharma book if u have....? If \'n\' is an odd positive integer, show that (n2-1)\xa0Is divisible by 8Any odd positive integer is in the form of 4p + 1 or 4p+ 3 for some integer p.Let n = 4p+ 1,(n2 – 1) = (4p + 1)2 – 1 = 16p2 + 8p + 1 = 16p2 + 8p = 8p (2p + 1)⇒ (n2 – 1) is divisible by 8.(n2 – 1) = (4p + 3)2 – 1 = 16p2 + 24p + 9 – 1 = 16p2 + 24p + 8 = 8(2p2 + 3p + 1)⇒ n2– 1 is divisible by 8.Therefore, n2– 1 is divisible by 8 if n is an odd positive integer. |
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| 28432. |
Find the hcf of 96 and 404 by prime |
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Answer» The answer is 4....? 96=2^5×3404=2^2×101HCF=2^2=4 4 |
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| 28433. |
If nineth term of A. P. is (2n+1)what is sum of its first three terms |
| Answer» 2*1+1=3(n=1)2*2+1=5(n=2)2*3+1=7(n=3)Required AP:3,5,7....Sum of first three terms :t1+t2+t3 3+5+7=15(ans.) | |
| 28434. |
Sum of first n terms of an ap is given by sn=2nsquare+3n find the 16th termof the ap |
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Answer» Apply the formula Sn=Sn- Sn-1 Sn=2n²+3n S1=2+3 a =5S2=2×2²+3×2a+a+d=142×5+d=14d=14-10d=4A16=a+15d =5+15×4 =5+60 =65 65........? |
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| 28435. |
Why in chapter 4 question 9 we can\'t take the smaller diameter be (x+10)hours |
| Answer» Read the ques u wll cme to know | |
| 28436. |
Triangle chapter all theorem with solution |
| Answer» see ncert | |
| 28437. |
Solve the following pair of linear equation by the substitution method |
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Answer» Where is the pair???? Where is the pair?? |
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| 28438. |
Can u tell me the important questions in ncert book for march examination.??¿ |
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Answer» In ncert all chapters are important We can\'t avoid atleast one chapter Practice the theorems in ch. 6 Boat and stream speed of ch. 3Time distance formula of ch. 3 and 4 Statistics, probability and construction and AP There are no fixed questions as any of them might come Remember all theorem s |
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| 28439. |
Solve the equation x^2-(√3+1)x+√3=0 by completing the square method |
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Answer» Parayunnu island hasn\'t been the PRINCE |
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| 28440. |
Why cannot rivers hear |
| Answer» Becaause they dont possess one of the important sense organ i.e . ear They dont possess ears because they are not living beings Thnx | |
| 28441. |
SinA +CosA =root2 CosAShow that CosA - SinA= root2 SinA |
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| 28442. |
C.F= 0-30,30-60,60-90,90-120,120-150,150-180 F=8,3,17,15,4,2, find the mean,mediam,mode |
| Answer» Places help me | |
| 28443. |
√1- (-1/√2)=??? |
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Answer» i.e , (2+√2)/2 = √2+1 (2√1+√2)/2 |
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| 28444. |
SinA /cosec-1 + cosA/1+secA =sinAcosA/sinA-cosA |
| Answer» something is wrong | |
| 28445. |
All the chapters of maths formulas |
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Answer» Its possible but very difficult. Seriously Bakwas joke |
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| 28446. |
What is the fourmulae of sum of angles of a polygon |
| Answer» The sum of the measures of the interior angles of a polygon with n sides is (n – 2)180. | |
| 28447. |
Prove that √2+√5 is irrational number |
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Answer» Not always irrational. Sum of two irrational numbers is always irrational ???? Ans. Let √2+√5 be rational no. (If possible)√2+√5=a/b. (Where a and b are integers) |
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| 28448. |
Formula that gives relation between mean,meadian and mode is_ |
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Answer» 3 median = mode + 2 mean 3median= 2mean+mode Mode = 3median -2mean |
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| 28449. |
Peoof that 5-9root3 is irrarional |
| Answer» 5-9✓3=a/b.......5-a/b=9✓3......5b-a/b=9✓3.......5b-a/9b=✓3......✓3 is irrational and 5b-a/9b is rational so this equation is irrational | |
| 28450. |
Find the median of the following data by makinga \'less than ogive\' |
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Answer» Plss check if the question be incomplete Where is data |
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