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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.
| 9351. |
Exercise 4.3 questions number 1 |
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| 9352. |
Exercise 3.2 question no 4 |
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| 9353. |
prove that 2 upon under root 7 is irrational number |
| Answer» First assume 2/root7 is rationalSo,2/root 7=a/b ( a and are coprime number Square both side, we get,4/7=a²/b²4b²/7=a²So 4/7 is factor of a²So 4/7 is also factor of a (by theorem)Now let a=4/7c ( for any integer c) so we get, (4/7c)²=4b²/716/49c²=4b²/7b²=4/7c²So 4/7 is factor of b² So 4/7 is also factor of bSo a and b are not coprime So our assumption is wrong So 2/root7 is irrational number (This is proved by contradiction method) | |
| 9354. |
X+y 5and 2x-3y 4 |
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| 9355. |
Solve the following pair equationBy substiitution |
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| 9356. |
Solve:a2x2-(a2b2+1)x + b2 =0 |
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| 9357. |
If the sum of two numbers are 16 and their reciprocal is 1/16 then find the two numbers |
| Answer» No real roots will be there as D<0 which means b²-4ac < 0, so D will be in negative. | |
| 9358. |
If 1000 toothpick are |
| Answer» Are? | |
| 9359. |
2023 ka paper |
| Answer» This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. Don\'t post personal information, mobile numbers and other details. Don\'t use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions. Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying. Ask specific question which are clear and concise. Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions. | |
| 9360. |
1+2 = ? |
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Answer» 3 3 3 3 3 |
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| 9361. |
The value of log root 2 to the power root 2root2 root2 root 2 roo2 |
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| 9362. |
How many circles of radius 3cm would be placed in a sphere of radius 6cm |
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Answer» 2 32 |
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| 9363. |
If (p-12)x²+2(p-12)x+2=0 has 2 equal roots find p |
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Answer» P =12 or 14 P = 12 or 10 6 |
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| 9364. |
Water is flowing at the rate of 15km/hour |
| Answer» So? | |
| 9365. |
Write the general form of a pair of linear equation in two variables |
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Answer» ax²+bx+c=0 Ax square +bx+c=0 |
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| 9366. |
1+ cosA+sinA/1+cosA-sinA= 1+sinA/cosA |
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| 9367. |
Prove that √7-√5 is irrational. Given that √35 is irrational. |
| Answer» What is answer | |
| 9368. |
Good 😊 night 😴😴 sweet dreams |
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Answer» Ok Thank u same to you .But also please concentrate on studies This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. Don\'t post personal information, mobile numbers and other details. Don\'t use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions. Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying. Ask specific question which are clear and concise. Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions. |
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| 9369. |
Hello friends 😁😁 |
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Answer» Hi Hii This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. Don\'t post personal information, mobile numbers and other details. Don\'t use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions. Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying. Ask specific question which are clear and concise. Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions. This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. Don\'t post personal information, mobile numbers and other details. Don\'t use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions. Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying. Ask specific question which are clear and concise. Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions. |
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| 9370. |
How to solve theorem questions of circles ? |
| Answer» BC =15√3 | |
| 9371. |
Determine the ap whose third term is 16 and 7th term exceeds the 5th term by 12 |
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Answer» A3 = 16A7 - A5 =12A+6d -A+4d =12By elimination:-2d =12D = 12/2D=6 answerHope it helps..... A3 = 16 A7 - A5 = 12 |
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| 9372. |
Some on send the importance question ❓❓ |
| Answer» Value of k square.Roots of equation by quadratic formula.SNAnVolume of shapesTSA of shapesModeCase study may be formed from chapters 9 and 13.Tangent prove Median.These are the questions which were also discussed in the video by dear sir.I am providing you the link of the YouTube channelhttps://youtube.com/c/DearSir | |
| 9373. |
How to find the middle term when n is even |
| Answer» (n/2)th and( n/2+1)th observation | |
| 9374. |
For a positive integer n, prove that nx3 - n is divisible by 6 |
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| 9375. |
Three cube same dimensions find the surface area of cube |
| Answer» The surface area of the cube is 6a square.Let the dimension of one cube be a=2Then the surface area of one cube will be 24cm.If we talk about the surface area of three cubes together then it will be24+ 24 +24= 72 cm all together.72 cm is the required answer to this question.Hope it helps | |
| 9376. |
Vikram wishes to fit three rods together |
| Answer» So? Apna question complete likha kro ya phir uski pic dal diya karo. | |
| 9377. |
Excersise no 5.1 question no 4 which of the following are ap 2,4,8,16 |
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Answer» AP : 2,4,8,16 is not in ap Because the difference is not commonD=4-2=2D=8-4=4D=16-8=8 This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. Don\'t post personal information, mobile numbers and other details. Don\'t use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions. Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying. Ask specific question which are clear and concise. Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions. |
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| 9378. |
Factorize (a+b)2 |
| Answer» asquare +2ab+ bsquare | |
| 9379. |
2x+5y=22x+3y=3Find the value of X,y |
| Answer» This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. Don\'t post personal information, mobile numbers and other details. Don\'t use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions. Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying. Ask specific question which are clear and concise. Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions. | |
| 9380. |
Show that reciprocal of 3+2√2 is irrational |
| Answer» let 1/3+3√2 be a rational number1/3+3√2 = a/b [ where b is not equal to zero]Rationalize the denominator,1/3+3√2= 3-3√2 / 3-3√2= 3-3√2/ (3)² - (3√2)²-(3-3√2)/ 9 = a/b-3 + 3√2 = 9a/b3√2 = 9a+ 3b/b√2 = 9a + 3b/3bwe know that √2 is irrationalIrrational is not equal to rational .therefore, 1/3+3√2 is irrational Hope that my answer helps... | |
| 9381. |
X^-60x_270=0 find its factors |
| Answer» 90 and -30 | |
| 9382. |
Formula of sum of zero |
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Answer» - coefficient of x/ coefficient of x² -B/A |
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| 9383. |
The nth term of a sequence is 3n-2n. Find the sum of first 15 term. |
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Answer» 15 an = 3n-2n =} a1 = 3(1)-2(1) =} a = 1 =} Similarly, a2 = 2 , a3 = 3 =} AP = 1,2,3,.... =} Sn = n/2[2a+(n-1)d] =} 15/2[2(1)+(15-1)1] =} 120 120 3 |
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| 9384. |
Solve by elimination method3x +4y = 102x - 2y = 2 |
| Answer» x=10-4y ÷ 3 x=2+2y ÷2 this equation and then solve | |
| 9385. |
find hcf of 399 and 1059 by applying Euclid\'s division leema |
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Answer» 1)1059=2*399+261 2)399=1*261+138 3)261=1*138+123 4)138=1*123+15 5)123=15*8+3 6) 15=3*5+0 °° HCF(1059,399)=15 1)1059=2*399+261 2)399=1*261+1353)261=1*135+1264)135=1*126+95)126=14*9+0 °° HCF(1059,399)=9 |
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| 9386. |
3√5 is smaller or 6√10 |
| Answer» 3✓5 | |
| 9387. |
Application to trigonometry |
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| 9388. |
4x+9y=1/2,12x+12y=1 |
| Answer» =4x+9y=1/2 .....(1) = 12x+12y=1 =} 12(x+y)=1 =} x+y=1 =} x=1-y .....(2) By putting eq. (2) in (1) :- 4(1-y)+9y=1/2 =} y = -7/10 = x = 1-y =} x= 17/10 | |
| 9389. |
¶ |
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| 9390. |
Prove: cosA-sinA+1/cosA+sinA-1= cosecA +cotA |
| Answer» J | |
| 9391. |
(a√a+b√b/√a+√b ) : (a+b) + 2b/ √a + √b |
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| 9392. |
How many two digits number divisible by 6 |
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Answer» AP = 12, 18, 24,....., 96 a= 12, d= 6, an= 96 , n=? an = a+ (n-1)d 96 = 12 + (n-1)6 84/6 = n-1 14 + 1 = n 15 = n 15 2,3 |
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| 9393. |
Prove that (a+b) whole square =asquare +bquare + 2ab |
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Answer» To prove : (a+b)² = a²+ b²+ 2ab LHS: =(a+b)×(a+b) =a²+ ab+ ba+ b² =a²+ b²+ 2ab LHS = RHS Hence proved. To prove : (a+b)² = a²+ b²+ 2ab LHS:=(a+b)×(a+b)=a²+ ab+ ba+ b²=a²+ b²+ 2abLHS = RHSHence proved. |
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| 9394. |
Formula of alpha beta and gamma |
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Answer» Alpha+beta+Gama=-b/aAlpha beta+ beta Gama+ Alpha Gama = c/aAlpha beta Gama=-d/a Answer |
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| 9395. |
three collinear points lie ona) Same line b) Same planec) Bothd) None |
| Answer» Same line | |
| 9396. |
Show that 17×43×61×41+43 is composite |
| Answer» Yes | |
| 9397. |
How many rational number lies between 2 and 3 |
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Answer» Infinity Infinite rational numbers can lies between 2 and 3 |
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| 9398. |
Example for deg q(x) = deg r(x) |
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| 9399. |
9 divided into 13.4 |
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| 9400. |
3p+2q=122p+3q=13In elimination method |
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Answer» P=2 q=3 P=2,Q=3 P=2,Q=3 |
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