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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.
| 2201. |
How to take out underoot value |
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Answer» You can take user root value as follows:For example;If, the given value is 1÷√3You can multiple denominator as shown in below=1÷√3×√3÷√3=√3×√3=3So the answer is √3÷3 We can find under roots by the prime factorisation methodLet\'s take an example-- √400 (under root 400)Step 1-- break it into it\'s prime numbers. (√16 × √25)Step 2-- here we can see the exact two no. Which are the exact root of 4 and 5. (√16=4 and √25=5)Step 3-- now multiply the two no. With each other. And we get the answer.(4×5=20)The other method to find the under root of √400 isStep 1-- break it into it\'s prime factors. (√2×2×2×2×5×5)Step 2-- now we can take the pairs outside of the root. (2×2×5)Step 3 -- now multiply the no. With each other. And we get the answer. (4×5= 20) |
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| 2202. |
What is aids and by which cause it starts |
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Answer» AIDS is a type of sexually transmitted diseases which is caused by improper intercourse of *****.with ******. Its causative organism is HIV(Human Immuno Deficiency )Virus.The method which prevent AIDS is Barrier method.i.e.use of condom... Acquired immuno deficiency syndrome is known as AIDS. It is caused by HIV |
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| 2203. |
Solve the eq. x²-10x-2=0 by completing sq. Method |
| Answer» We have{tex}x^2 - 10x\xa0- 2 = 0{/tex}{tex}\\Rightarrow{/tex}\xa0{tex}x^2 - 10x\xa0= 2{/tex}{tex}\\Rightarrow{/tex}\xa0x2 - 2 {tex}\\times{/tex}\xa0x {tex}\\times{/tex}\xa05 + 52 = 2 + 52 [adding 52 on both sides]{tex}\\Rightarrow{/tex}\xa0{tex}(x\xa0- 5)^2 = (2 + 25) = 27{/tex}{tex}\\Rightarrow{/tex}\xa0{tex}x\xa0- 5 ={/tex}{tex}\\pm \\sqrt { 27 } = \\pm 3 \\sqrt { 3 }{/tex} [taking square root on both sides]{tex}\\Rightarrow{/tex}\xa0{tex}x -\xa05 ={/tex}{tex}3 \\sqrt { 3 }{/tex} or x\xa0- 5 = -{tex}3 \\sqrt { 3 }{/tex}{tex}\\Rightarrow{/tex}\xa0{tex}x\xa0= (5 +{/tex}{tex}3 \\sqrt { 3 }{/tex}) or x\xa0= (5 -\xa0{tex}3 \\sqrt { 3 }{/tex}\xa0).Hence, (5 + {tex}3 \\sqrt { 3 }{/tex}) and (5 -{tex}3 \\sqrt { 3 }{/tex}) are the roots of the given equation. | |
| 2204. |
2x+3=7 |
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Answer» 2x=7-3, 2x = 4, x = 4/2, x=2 X=2 |
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| 2205. |
cos45°/sec30°+cosec30°= |
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| 2206. |
a/ax-1+b/bx-1=a+bSolve for x |
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| 2207. |
A y a x minus 1 + b y p x minus 1 is equal to a + b solve for x |
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| 2208. |
56×37 |
| Answer» 2072 | |
| 2209. |
If the point P(x,y) is equidistant from the points A(5,1) and B(1,5) prove that x=y. |
| Answer» \xa0Given that PA = PB\xa0√(x- 5)2\xa0+ (y-1)2\xa0= √(x-1)2\xa0+ (y-5)2√x2\xa0-10x+25 +y2\xa0+1-2y = √ x2\xa0+1-2x+y2\xa0+25-10y√ x2\xa0-10x+y2-2y +26 = √ x2-2x+y2\xa0-10y +26squaring both sides, we getx2-10x +y2-2y +26= x2-2x+y2-10y +26-10x+2x = -10y+2y-8x = -8yx= y\xa0 | |
| 2210. |
What is the CSA of cone |
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Answer» Pai RL 22÷7×rl πrl where l=√r^2 + h^2 πrl πrl |
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| 2211. |
What is prime number |
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Answer» Oh yes 1 also No. Which are divisible by 1 and itself The no. which is divisible by 1 and itself That is divisible by its own |
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| 2212. |
2x-3y==2X+2y=8elimination method |
| Answer» Y is 2X is 4May be | |
| 2213. |
How to score ? present Mark\'s in maths |
| Answer» Do practice..do practice.................... | |
| 2214. |
Solve by Cross multiplication method. x/a + y/b = a+b ; x/a2 + y/b2 = 2 |
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| 2215. |
Board questions in cbse 10 math |
| Answer» You can check last year papers here :\xa0https://mycbseguide.com/cbse-question-papers.html | |
| 2216. |
Cbse board questions in ten year |
| Answer» You can check last year papers here :\xa0https://mycbseguide.com/cbse-question-papers.html | |
| 2217. |
Cabse |
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| 2218. |
Find the vertices of triangle, the mid points of whose sides are (3,1), (5,6) and (-3,2). |
| Answer» Let vertices of {tex} \\triangle ABC{/tex}\xa0be A(x1,\xa0y1), B(x2, y2) and C(x3, y3)By mid-points formula{tex}\\frac{{{x_2} + {x_3}}}{2} = 3 \\Rightarrow {x_2} + {x_3} = 6{/tex}\xa0...... (i){tex}\\frac{{{y_2} + {y_3}}}{2} = 1 \\Rightarrow {y_2} + {y_3} = 2{/tex}\xa0...... (ii){tex}\\frac{{{x_3} + {x_1}}}{2} = 5 \\Rightarrow {x_3} + {x_1} = 10{/tex}\xa0..... (iii){tex}\\frac{{{y_3} + {y_1}}}{2} = 6 \\Rightarrow {y_1} + {y_3} = 12{/tex}\xa0..... (iv){tex}\\frac{{{x_1} + {x_2}}}{2} = - 3 \\Rightarrow {x_1} + {x_2} = - 6{/tex}\xa0..... (v){tex}\\frac{{{y_1} + {y_2}}}{2} = 2 \\Rightarrow {y_1} + {y_2} = 4{/tex}\xa0...... (vi)Adding (i), (iii) and (v)2(x1 + x2 + x3) = 10{tex} \\Rightarrow {/tex}\xa0x1 + x2 + x3 = 5 ...... (vii)Adding (ii),(iv)and (vi)2(y1 + y2 + y3) = 18y1 + y2 + y3 = 9 ....... (viii)Subtracting (i), (iii) and (v) from (vii)We get, x1 = -1, x2 = -5, x3 = 11Subtracting (ii), (iv) and (vi) from eq. (viii)We get, y1 = 7, y2 = -3, y3 = 5 | |
| 2219. |
Area of a triangle |
| Answer» 1/2.b.h | |
| 2220. |
Which book is best arihant or osswall? |
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Answer» Both are best but if u r preparing for board exams OSWAAL is the best... I think oswal? |
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| 2221. |
-5 is one of the zero of 2x²+px-15,zeros of p(x²+x)+k are equal to each other .Find the value of k |
| Answer» k = -140 | |
| 2222. |
Solve 2x+3y =11 & 2x-4 =_24 and hence find the value of \'m\' for which y = mx+3 |
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Answer» Acc. To me its answer is -11/15 and vaibhav I thought in this question there is error in equation 2 there is y so through which m =-1 m= -13/21 M = 59/30 |
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| 2223. |
Find the value of p for which the quadratic equation is x(x-4)+p=0 |
| Answer» P=-4 | |
| 2224. |
Secant |
| Answer» It is a line which intersects a circle in two distinct points | |
| 2225. |
Probility of getting even prime no in a dice |
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Answer» 1/6 because 2 is the only even prime no P(E) = 1/6 P(E)=0 1 Sorry it\'s 3/6=1/2 1/3 |
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| 2226. |
Probility of getting even prime no in dice |
| Answer» 3/6 = 1/2 | |
| 2227. |
Hlo lshi... |
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| 2228. |
Kaise pta lgaye ki value terminating h ya nhi ◀◀◀◀????? |
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Answer» 2m×5n 2m into 5n |
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| 2229. |
Find the value of sin 45 by using the formula sin(A+B)=sinAcosB + cosAsinB |
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Answer» let A=45 and B=30substitute these values in the formula sin(A+B)sin(45+30) = sin45co30+cos45sin30substituting the respective sin and cos values we getsin75 = √3+1/2√2 1/root 2 |
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| 2230. |
If the equation x square+6x_91=0can be written as (x+p) (x+q)=0 then find p and q. |
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| 2231. |
Find the area of a circle inscribed in asqaure of side 7 cm |
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Answer» Amish ur answer is correct ..well done 38.5 cm square |
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| 2232. |
Express sin67°+cos50° in terms of trigonometric ratios of angles between 0° and 45° |
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Answer» Cos23°+sin40° ? ? ? ? ? |
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| 2233. |
If each edge of a cube is increase by 50%, the percentage in the surface area is |
| Answer» Let the length of each edge of the cube be a cm.After increment, new edge = a + a ×{tex}{50}\\over100{/tex}= a + {tex}{a\\over2}{/tex}={tex}{3a}\\over2{/tex}cmOriginal surface area of the cube = 6a2cm2New surface area of the cube after increment ={tex}6*[{3a\\over2}]^2{/tex}={tex}{27}\\over4{/tex}a2 cm2∴Increase in the surface area of the cube ={tex}{27}\\over2{/tex} a2 – {tex}6{/tex}a2={tex}{15}\\over2{/tex}a2∴Percentage increase in the surface area of the cube ={tex}{{{15}\\over2}a^2\\over6a^2}*100{/tex}={tex}{125}{/tex}∴ There is 125% increase in the surface area of the cube. | |
| 2234. |
Two dairy owners A and B sell flavoured milk filled to capacity in mugs of |
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| 2235. |
Hlw Everybody,have u prepared for board examination???⚠⚠⚠ |
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| 2236. |
Best time to study |
| Answer» Morning studies that is from 4:00 AM - 6:00 AM during school days and during offs 4:00 AM - 7:00AM. | |
| 2237. |
Hor to learn trigonometry table |
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| 2238. |
How can I by heart the trigonometric values? |
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| 2239. |
What is wheat stone bridge? |
| Answer» In wheat stone bridge opposite resistance are connected in parallel | |
| 2240. |
If the point a(4,3) and b(x,5) are on the circle with the centre o(2,3) find value of x |
| Answer» 4+x=2, x=2/4 , x=1/4 | |
| 2241. |
Sin²€=1 . What is value of € |
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Answer» Right siddharrt €=90° |
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| 2242. |
Formula of perimeter of square and rectangle |
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Answer» Square:---4*sideRect:-2(l+b) square=4×side rectangle=2(l+b) Perimeter of square=(side)^2 |
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| 2243. |
Two coin are tossed |find at most 1head |
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Answer» 1/2 is the correct answer because it has four cases. 1.HH.2.HT.3.TH.4.TT.therefore the probability is 1/2. If two coins are tossed simultaneously then the probability of getting at least one head is 3/4 because total outcomes are:1.Head-Head2.Head-Tail 3.Tail-Head 4.Tail-TailSo favorable outcomes are = 3 Probability of coming at most one head if two coin are tossed simultaneously = 2/4=1/2 |
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| 2244. |
What is trinomentry |
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Answer» It is the branch of mathematics which deals with the measurement of angles and the problems allied with angles It is about the side or angle of triangle Trigonometry is actually a ratio between 2 sides |
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| 2245. |
What is the standard equation of quadratic polynomial |
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Answer» Standard eq is that one which have ascending order of power. Means greater power first than the smaller one ax^2+bx+c |
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| 2246. |
How is sin2A + cos2A = 1? |
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Answer» Now we proceed to the proof.Let alpha = x and beta = -x=> cos(x + (-x)) = cos(x)cos(-x) - sin(x)sin(-x)⇒cos(x+(−x))=cos(x)cos(−x)−sin(x)sin(−x)=> cos(0) = cos(x)cos(x) - (-sin(x)sin(x)):. 1 = cos^2(x) + sin^2(x) 2 Comments Sorry, yes he is right it is an identity It\'s an identity. |
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| 2247. |
Weithage for pt3 |
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Answer» Same as periodic test 2 There will be total 30 questions in which 6 questions will be of 1 Mark, 6 questions of 2 marks, 10 questions of 3 marks, 8 questions of 4 marks. |
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| 2248. |
show that exactly one of the number n,n + 2 or n+ 4 is divisible by 3 |
| Answer» Let n =3kthen n + 2 = 3k + 2and n + 4 = 3k + 4Case 1: When n=3k ,n is divisible by 3 ............(1)n + 2 = 3k + 2or, n + 2 is not divisible by 3n + 4 = 3k + 4= 3(k + 1) + 1or, n + 4 is not divisible by 3Case 2:When n=3k+1, n is not divisible by 3\xa0n + 2 = (3k + 1) + 2=3k + 3 = 3(k + 1){tex} \\Rightarrow{/tex}\xa0n+ 2 is clearly divisible by 3..........................(2)n + 4 = (3k + 1) + 4= 3k + 5= 3(k + 1) + 2{tex}\\Rightarrow{/tex}\xa0n + 4 is not divisible by 3Case 3:When n=3k+2,n is not divisible by 3\xa0n + 2 = (3k + 2) + 2= 3k + 4(n + 2) is not divisible by 3x + 4 = 3k + 6 = 3(k + 2){tex}\\Rightarrow{/tex}\xa0n + 4 is divisible by 3........................(3)Hence, from (1),(2) and (3) it is clear that\xa0exactly one of the numbers n, n + 2, n + 4, is divisible by 3. | |
| 2249. |
If sinA/sinB=√2 and tanA/tanB=√3 then evaluate the value of A and B. |
| Answer» A=45°and B=30° | |
| 2250. |
12/12= |
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Answer» 1 1 |
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