Saved Bookmarks
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.
| 3151. |
Hfki |
| Answer» | |
| 3152. |
Limit to x square + 9 x |
| Answer» Lim (x*2 +9x) X-1Ans- 1*2 +9 x 1 =10 | |
| 3153. |
Ch 10 hve how much weightage |
| Answer» | |
| 3154. |
How we can solve this (cos x + cos y) square + ( sin x + sin y ) square = 4cos square(x+y÷ 2) |
| Answer» LHS = cos2 x + cos2 y + 2 cos x cos y + sin2 x + sin2y + 2 sin x sin y = 2 + 2 ( cos x cos y + sin x siny ) = 2 ( 1 + cos ( x - y ) ) = 2 * 2 cos2( ( x - y ) / 2 ) (because 1.+ cos x=2cos2x / 2 ) = 4 cos2 ( (x - y ) / 2 ) = RHS\xa0 | |
| 3155. |
Finda the coefficient ofX pow5 in (x+3)pow8 |
| Answer» First find r =3 ,the coefficient of x power 5 = 1512 | |
| 3156. |
Lim = xsinx/xx--1 |
| Answer» i dont understand your question | |
| 3157. |
Sinx-7/6 |
| Answer» | |
| 3158. |
Sec^2x-2%tanx-1 |
| Answer» | |
| 3159. |
FIND THE RANK OF THE WORD "MOTHER" WHEN ITS LETTERS ARE ARRANGED IN A DICTIONARY? |
| Answer» the rank of the word Mother is 309.( To find this rank we have a mathematical trick ?) | |
| 3160. |
Cosec 1410 |
| Answer» Cosec1410 =2 | |
| 3161. |
value of tan5pi/8 |
| Answer» | |
| 3162. |
If the vertics of a triangle be (0,0) (6,0) and (6,8) then its incentre will be |
| Answer» 4, 8/3 | |
| 3163. |
What is the radius of smallest circle....? |
|
Answer» ?? Negligible R |
|
| 3164. |
What is rotational number |
| Answer» | |
| 3165. |
Lim x^3 - 125÷x^2 - 7x + 10x-4 |
| Answer» Bhaii x tends to whatt please submit the whole question | |
| 3166. |
If sin(x+y) =a and sin (x-z) =b then prove cos2(y-z) - 4abcos (y-z) =1-2a^2-2b^2 |
| Answer» | |
| 3167. |
i forget the questions of maths at very few time period |
|
Answer» Weekly once go through all chapter sums.so that u will not forget and u will get revised with the topics. Practice only ncert for ur concept clearing.read even the theory part of text book also First clear every question of ncert Rs Agarwal also Same here?? Practice as much as u can with different book....best book is rd sharma |
|
| 3168. |
Exercise 9.2 and question no. 11 |
| Answer» | |
| 3169. |
Find x if x^2 - [x] - 4 = 0 |
| Answer» | |
| 3170. |
The vertics of triangle PQR are p(2,1) |
| Answer» | |
| 3171. |
How many 4 digit number are there with no digit repeated |
|
Answer» no. 0 to 9 total numbers= 10 1000th place can\'t be filled by 0 bcoz if 0 is used then it will become 3 digit number so 1000th place can only be filled by 1 to 9No. Of ways of filling 1000th place= 9No. Of ways of filling unit,10th & 100th place= 9×8×7Required 4 digit number = 9×9×8×7= 4536 =4536 9×9×8×7 There are such 9 numbers 9*8*7*10 |
|
| 3172. |
How to find the square root of complex number? |
| Answer» After removing iota | |
| 3173. |
Sum of 1to100 in 1 minute |
|
Answer» By using the formula {n×(n+1)}/2 Here , {n ×(n+1)}/2= {100 × (101)}/2 =10100/2 =5050 99 |
|
| 3174. |
Ehat is the formula gor €[1-cosπ/4n]/2 |
| Answer» | |
| 3175. |
Why modulus output is always positive? |
| Answer» It is how people defined it. People wanted to define some function that takes a number as input and gives only the absolute value(always positive) of that number as output. And they named it as modulus | |
| 3176. |
Important question of ch 10 |
| Answer» 10.3 excersice last 6 questions and solved exampleand miscellaneous exercise solved example and unsolved | |
| 3177. |
Find the sum of the series 1³+3³+5³........+(2n-1)³ |
|
Answer» Personal no.de do bata denge Last term is (2n-1)की power 3.okkk First off all, given that last term 3 (2n-1) So,Open the last term by identity of cube.and,find the sum using special series formula... |
|
| 3178. |
Which chapter you guys are doing in mathematics??? |
|
Answer» Straight lines Kaisa lg rha limit and derivatives solve krke???? limits and derivatives Limits and derivatives.... I am also doing mathematical reasoning Mathematical resoning |
|
| 3179. |
n(n+1)(n+5)is a multiple of 3 |
| Answer» Yes | |
| 3180. |
Find the sum to n term of an AP whose kth term is 5k+1 |
| Answer» | |
| 3181. |
Why 2+2=4 ? |
| Answer» SUM RULE | |
| 3182. |
Evaluate Lim x~0 sin(a+x) - sin(a-x)/x |
| Answer» | |
| 3183. |
How many numbers are there between 100and 1000 such that at least one of the digits is 6? |
| Answer» | |
| 3184. |
4+5(p_1)=34 |
| Answer» 4+5(p_1)=34 | |
| 3185. |
3(+3+5 )! |
| Answer» | |
| 3186. |
What is hyperbola |
| Answer» In mathematics, a hyperbola is a type of smooth curve lying in a plane, defined by its geometric properties or by equations for which it is the solution set. A hyperbola has two pieces, called connected components or branches, that are mirror images of each other and resemble two infinite bows | |
| 3187. |
Prove that n! + 1 is not divisible by any number from 2 to \'n\' . |
| Answer» Since n! is divisible by all numbers from 2 to n and leaves remainder 0. Thus if we add 1 to n! it will always leave 1 as remainder when divided by numbers from 2 to n | |
| 3188. |
The sum of the series 3,33,333,3333................ till nth term? |
|
Answer» There is a solved example in ncert like this question.using that u can solve this. Same like what krish said 3/9 common leke then solve |
|
| 3189. |
Express i^9+i^10+i^11+i^12 in the form of a+ib |
| Answer» | |
| 3190. |
a(cosC-cosB)=2(b-c)cos^2(A/2) |
| Answer» | |
| 3191. |
find the eccentricity of the ellipse if its latus rectum is one third of its major axis |
| Answer» | |
| 3192. |
What is slope? |
|
Answer» Slope is the inclination b/w a line and to the angle with the positive direction of the axes. Slope =m=tan theta. Slope simply means inclination of a line with positive x axis. Slope = tan theta, where theta is the angle made with x axis and y2-y1/x2-x1Slope of x axis = tan 0= 0Slope of y axis = tan 90= not defined. Slope(M) = ∆Y/∆X=y2-y1/x2-x1=tanøSlope is the angle of a line with x axis....a line parallel to x axis will have a slope of 1. M =tan o_ It is line which create an angel on positive x axis |
|
| 3193. |
Ex.1.1 |
| Answer» | |
| 3194. |
FOR ALL N>-1"Prove that 1square + |
| Answer» | |
| 3195. |
The eccentricity of parabola y^2=8x is (A)-2 (b)-2 (c)1 |
|
Answer» As we know in parabola e should be equal to 1 then only it will form parabola is e is less than 1 than it is ellipse and if e is greater than 1 it is hyperbola.thats why we ysed to find in ellipse and hyperbola eccentricity.but in parabola u can simply write 1 there is no formula or anything for finding e.hope u got my point Pr yha to 8x h to kese Ans is 1.since e of parabola is always equal to 1 |
|
| 3196. |
Sin22/7 |
| Answer» -0.00126448893 is the value of sin22/7 | |
| 3197. |
Sin200+sin210+sin280+sin370 |
|
Answer» =-1.99. -0.34-0.5-0.98-0.17 |
|
| 3198. |
Fimd the sum to n terms of the sequence 6,6.6,6.66.....n given it is a GP series |
| Answer» | |
| 3199. |
Class 9 ncert solutions |
|
Answer» Form were i can study in physice U will get in this app if u changr ur class otherwise vedantu,learn cbse in google will provide u ncert solutions Surface and volume |
|
| 3200. |
Y=ax+b graphical presentation |
| Answer» | |