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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.
| 4251. |
If mean of terms is 105.Find the value of x from following terms : 32,108,97,x,307,x-10,54,134 |
| Answer» 2x-10 =1052x=105+102x=115X=115/2=57.50Ans....... | |
| 4252. |
Ac 3cm a+b = cm cone b = 45 digree |
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| 4253. |
Factorise x²-5x+6 |
| Answer» =X2 -3x-2x+6=X(x-3)-2 (x-3)=(X-2)(x-3) | |
| 4254. |
Question for elimination method |
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| 4255. |
What is the longest pole in room of l=10cm b=10cm h=5cm? |
| Answer» Calculate it\'s diagonal | |
| 4256. |
What is area of sphere |
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Answer» 4*22/7*r*r 4πr square IT is 4πrr |
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| 4257. |
6 r oot 35 ko kaise open kre |
| Answer» 6root35=6*6=36Because root 36=square of 6 Approx 6 | |
| 4258. |
What is the sum of alternate angles |
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Answer» There is no sum of alternate angles. The alternate angles are forming the shape Z which means that the angles between two parallel lines are same There is no sum of alternate angles There is no sum of alt angles. The angles are same of that of its alt angle |
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| 4259. |
Find the value of a and b if (7+3root5 /3 +root5) -( 7 - 3root5/ 3-root5 )=a + root 5b |
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| 4260. |
How can we factorise polynomials in an easier way |
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| 4261. |
If x/y+y/x=-1,where x and y are not equals to 0 then find the value of x^3-y^3 |
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| 4262. |
Write in p/q form0.786 bar |
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Answer» your ans will be 0.786786786 Let x=0.786786786...... i 1000x= 786.786786786...... ii Subtracting eq. i from ii....we have:- 1000x - x= 786.786786.... - 0.786786....... 999x=786 x= 786÷999 Calculate it and that will be your answer |
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| 4263. |
sides of a triangle are in the ratio of 3:5:7 and its perimeter is 300meter.find its area |
| Answer» Let the sides of triangle be 3x,5x and 7x.According to the ques.Perimeter of triangle=sum of all sides300=3x+5x+7x15x=300x=300÷15x=20Now, The sides are3x=3×20=605x=5×20=1007x=7×20=140Let a=60,b=100&c=140Therefore,s=(a+b+c)÷2=300÷2=150Now,using Heron\'s formulaArea of triangle=√{s(s-a)(s-b)(s-c)}=√{150(150-60)(150-100)(150-140)}=√(150×90×60×10)=3×3×10×10√2×5=900√10ans. | |
| 4264. |
If x=2+3√2 then find the value of x+x/14 |
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| 4265. |
Prove the therem 10.6 class 9 ncert |
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| 4266. |
Teurom 10.8 circle in class 9 |
| Answer» Draw a circle and and take two points and name it A and B. Let the centre of the the circle be O. Join OA and OB. mark a point P on the other side of the circle. Now join AP and BP. Join OP and extend to the other side say PQ. PROOF:consider triangle AOPsince OP=OA (radii)The triangle is isosceles. So,Angle OPA = OAPlet the equal angles be \'x\'.. ....(1)Similarly, Angle OAP=OBPlet the equal angles be \'y\'... ......(2)From (1and2)Angle APB = x+y........(3)Angle AOQ = x+x=2x(exterior angle property)Angle BOQ = y+y=2y(exterior angle property)Angle AOB = AOQ+BOQAOB = 2x+2y = 2(x+y)Therefore angle AOB = 2*ABP( from (3)). | |
| 4267. |
3x2 |
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Answer» 6 6 6 |
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| 4268. |
Find 2 irrational number between 1/7and2/7 |
| Answer» 1/7 and 2/7Multiply by 4 on both sides and you will get some irrational numbers -4/28,5/28,6/28,7/28,8/28. | |
| 4269. |
5-5 |
| Answer» O | |
| 4270. |
Factorise. 6xx+11x+6 |
| Answer» Dear Student,I guess the question is wrong.the question may be :\xa0Factorize: x3\xa0+ 6x2\xa0+ 11x + 6.The given solution is as per the above question. | |
| 4271. |
Show that the quadrilateral formed by joining the pair of adjecent sides of a square is a square? |
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| 4272. |
a^12y^4-a^4y^12 |
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| 4273. |
1 cm=?m |
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Answer» 1cm =100 m 0.001m 1cm=1/100 1/100 |
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| 4274. |
We are given an isosceles triangle ABC in which AB = AC. We need to prove that |
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| 4275. |
Theoram 10.5 explained easily with diagram |
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| 4276. |
Factorise: a^3 - 27b^3 + 7ab^2 - 21ab^2 |
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| 4277. |
If 2x + 3y = 12 and xy = 6 then find 8x^3 + 27y^3 |
| Answer» 8x^3+ 27y^3 = (2x)^3 + (3y)^3 = ( 2x+3y)(2x^2 - 2x× 3y + 3y^2) = 12 ( 4x^2 - 6xy + 9y^2) = 12 ( 4x^2 - 6×6+9y^2) = 12 ( 2x^2 - 36 + 3y^2) = 12 ( 2x + 3y )^2 = 12 ( 12)^2 = 12× 12×12= 1728. Ans.... | |
| 4278. |
In which quadrant does the following life( - 3 + under root 5 ,- 3 - under root 5 ) lies |
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| 4279. |
Verify a^3+b^3+c^3-3abc=0.5(a+b+c)[(a-b)^2+(b-c)^2+(c-a)^2] |
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| 4280. |
Circles theorem 10.6 answer |
| Answer» Figured says following things 1. Chords are equal and there name is AB,CD2.Center of circle is E3. From DB Draw to lengths to E,these as you see are the radii is circle4. From E draw perpendicular bisectors on both chord and name it G And F respectivily on CD and ABProofNow as you see triangle GED and EFB are congruent.So,GE and EF are equal by CPCT | |
| 4281. |
Can you give the videoesof the chapters please especially ch-5 ,11 |
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| 4282. |
Radius=5cmFind area of sphere |
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Answer» {tex}\\style{font-family:Arial}{4\\mathrm{πr}^2=100x3.14=314\\;cm^2}{/tex} 25π |
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| 4283. |
Prove that area of equilateral triangle is root 3 a square /4 where a is the side of triangle |
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Answer» Can anyone give me its written proof Prove it from heron\'s formula |
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| 4284. |
Make two circles thre crod are eUEL |
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| 4285. |
If p=2-a, then prove that a^3+6ap+p^3-8=0 |
| Answer» a^3 + 6ap +p^3 - 8= a^3 + 6a ( 2 - a) + ( 2 - a)^3 - 8= a^3 + 12a - 6a^2 + (2)^3 - a^3 - 3 (2)^2 (a) + 3 (2)(a)^2 - 8= a^3 + 12a - 6a^2 + 8 - a^3 - 12a + 6a^2 - 8 = 0.Hence proved. | |
| 4286. |
Prove that the sum of angles of triangle is 180 |
| Answer» FROM\xa0Δ ABC\xa0draw a\xa0parallel line DE ║\xa0BC∠DAB +\xa0∠BAC +∠CAE = 180∠DAB =\xa0∠ABC (ALTERNATE ANGLES ARE EQUAL)∠CAE =\xa0∠ACB (ALTERNATE ANGLES ARE EQUAL)SO,\xa0∠ABC +\xa0∠ACB +\xa0∠BAC =180 | |
| 4287. |
Construct triangle ABC BC = 4.5 CM Angle B equal to 60 degree A B + AC= 7.1 CM |
| Answer» Steps:1. Draw BC = 4.5 cm.2. Construct angle B = 60°.3. Cut BD = 7.1 cm.4. Join CD.5. Draw the perpendicular bisector of CD meeting BD at point A.6. Join AC.7. Hence ABC is the required triangle. | |
| 4288. |
Find value of x if 5^x +5^×-1=750 |
| Answer» 5^x + 5^x-1=750 now taking 5^x common. 5^x (1+5^-1)=750 5^x(1+1/5)=7505^x * 6/5 = 750Now transposing 6/5 to RHS5^x = 6255^x=5^4By comparing, we get x=4 | |
| 4289. |
3√45 - √125 + √200 - √50 |
| Answer» These can be simplifiied as 9√5 - 5√5 + 10√2 - 5√2 which = (9-5)√5 + (10-5)√2 = 4√5 + 5√2. | |
| 4290. |
If AB||CD||EF and y:z 3:7 then what will be the value of x? |
| Answer» Value of x is 36. | |
| 4291. |
Write the probity of an impossible event |
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Answer» 0 0 |
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| 4292. |
Find the range of 17-37 |
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Answer» O sorry its 20 37-17=29 |
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| 4293. |
100-100/loo-100 (2 answer) |
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Answer» Sorry,correct ans is not defined as anything cant be divided by 0 Correct answer is negative or minus 1 (-1) 100-100/100-100 =0/0 so answer 0And if we divide it directly so answer 1 |
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| 4294. |
If x=(3-2√2),show that [√x-1/√x]=+-2 |
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| 4295. |
Write the coordinate of a point whose abscissa is -3 and which lies on x axis |
| Answer» (-3,0) | |
| 4296. |
1/√3 + √2 - 2/√5 - √3 - 3/√2 - √5 |
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| 4297. |
In the figure l parrlal m find ∆y |
| Answer» Please check your question | |
| 4298. |
Which chepter is most improtant |
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Answer» Circle and lenear rquation in 2 variable Surface area and circle Circle and surface area and volume Circle Ch-5,6,7,8,9,10,13. Circle |
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| 4299. |
In the given fig ABCD is quadrilateral AD parallel to BC and x:y=11:19 find angle DCE |
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| 4300. |
In a circle if AB is the diameter and AC is a chord in which AB=6cm and BC=2.5cm.Find AC |
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Answer» 6.5 is correct 5.45 |
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