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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.
| 8601. |
Find one rational and one irrational number between √3 and √5. |
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Answer» Rational √4 irrrational 1.838338333..... Rational √4 irrrational 1.838338333..... |
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| 8602. |
What is the probability of getting a doublet of 2 dice were thrown simultaneously? |
| Answer» 6/36=1/6 | |
| 8603. |
Why is any no. with the power zero have the value 1 |
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Answer» Because it was a law of exponents It is known by observing the pattern of power of number for example- 5^2= 25when we reduce 1 power then, 5^1 = 25/5= 5and so same for 1 more less power5^0= 5/5 =1 |
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| 8604. |
if BAF is an Isosceles triangle than the distance between points B and F is |
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Answer» Send picture of triangle Equal |
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| 8605. |
What is a mean of first 12 prime numbers |
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Answer» (2,5,7,11,13,17,19,23,29,31,37,41)= 235/12 2 ,3,5,7,11,13,17,19,23,29,31primenumber first 12 FIRST 12 prime numbers are 2,3,5,7,11,13,17,19,23,29,31. Mean=sum of all terms divided by total number of terms. =2+3+5+7+11+13+19+23+29+31/12. = 160/12. |
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| 8606. |
2x+1=n |
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Answer» X= n-1/2 X=n-1/2 X=n-1 What do we have to take out? |
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| 8607. |
How to solve difficult trigonometric problems |
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Answer» By remembering all the trigonometry table Vgc |
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| 8608. |
If one of the zeroes of the polynomial 2x^2 -4x - 2k is reciprocal of the other, find k |
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Answer» Alpha×1/alpha=-2k/2 Zeroes are= ¢ and 1/¢ ¢×1/¢= c/a¢×1/¢= -2k/21=-kK=-1 answer.... Combination reaction: In this reaction in which two or more reactants combine to form a single product.A+B=AB Example: Burning of coal C(3)+O2(g)=Co2(g)Formation of water:H2(g)+O2(g)=H2O(l) K what is combination reaction |
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| 8609. |
If x=0 find the value of p |
| Answer» What p to kuch h bhi na | |
| 8610. |
a(-1, -1), b(6, 1) ,c(8, 8), d(x, y) are the vertices of a rhombus taken in order |
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| 8611. |
8.4 all question on 5 to right hand side prove |
| Answer» 8.4 question 5 rhs prove give me | |
| 8612. |
Without factorisation, find the nature of the roots of Quadratic equation |
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Answer» b^2-4ac D²-4ac, can find nature of roots Use quadratic formula... 1.If value of discriminant is equal to zero ,roots will be equal.2.If value of discriminant is greater than zero roots will be real.3.If value of discriminant is less than zero roots will be imaginary. |
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| 8613. |
In the adjoining diagram MM=CN.Prove that triangle ABC is isoscele |
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| 8614. |
Prove that 1/√2 is irrational. |
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Answer» Let us assume 2\u200b1\u200b is rational. So we can write this number as 2\u200b1\u200b=ba\u200b ---- (1) Here, a and b are two co-prime numbers and b is not equal to zero. Simplify the equation (1) multiply by 2\u200bboth sides, we get 1=ba2\u200b\u200bNow, divide by b, we get b=a2\u200b or ab\u200b=2\u200bHere, a and b are integers so, ab\u200b is a rational number, so 2\u200b should be a rational number. But 2\u200b is a irrational number, so it is contradictory. Therefore, 2\u200b1\u200b is irrational number Let us assume\xa02\u200b1\u200b\xa0is rational.So we can write this number as2\u200b1\u200b=ba\u200b\xa0---- (1)Here,\xa0a\xa0and\xa0b\xa0are two co-prime numbers and\xa0b\xa0is not equal to zero.Simplify the equation (1) multiply by\xa02\u200bboth sides, we get1=ba2\u200b\u200bNow, divide by\xa0b, we getb=a2\u200b\xa0or\xa0ab\u200b=2\u200bHere,\xa0a\xa0and\xa0b\xa0are integers so,\xa0ab\u200b\xa0is a rational number,\xa0so\xa02\u200b\xa0should be a rational number.But\xa02\u200b\xa0is a irrational number, so it is contradictory.Therefore,\xa02\u200b1\u200b\xa0is irrational number |
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| 8615. |
Ch 8 all formula in detail? |
| Answer» Sin theta =P/HCos theta=B/HTan theta=P/BCosec theta= H/PSec theta=H/BCot theta= B/PSin2 theta+ Cos2 theta =11+ tan2 theta=sec2 theta1+ cot 2 theta= cosec 2 theta | |
| 8616. |
Alpha cube+beta cube+gamma cube= |
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Answer» 3×alpha×beta×gama. This is correct (-b/a)³ |
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| 8617. |
Prove that the square of any integer is of the form 3m or 3m+1 but not of the form 3m+2 |
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| 8618. |
Find the area of a sector of a circle whose radius is r and length of the arc is l. |
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Answer» From formula ,Area of sector = 1/2×l.r area of sector = ?,radius= r, length=l.Arc length= theta/360 *2πr l=theta/180*πr area of sector=theta/360*2πr^ we write as area of sector= theta/2*180*πr*r= (theta /180*πr)*r/2=l*r/2 ans Iske bdd hi nhi ho raha h Pura find kijiye Area of sector = πr^2theta/360° |
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| 8619. |
Tan A = 3/4, find the value of 1/sinA + 1/cos A |
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Answer» J Tan = P/BWhere P = 3 and B = 4For hypotenuseBy Pythagoras theoremH×H = P×P + B×B = 3×3 + 4×4 = 9 + 16 = 25 H = 51/SinA = CosecA1/CosA = SecACosecA = H/P and SecA = H/BCosecA + SecA = 5/3 + 5/4 = 20 +15/12 = 35/12 25/12 Can you explain the answer 1/3/5+1/4/5 |
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| 8620. |
Evaluate:-[¡] Sec41° Sin49°+Cos49° Cosec41°2/root 3(tan20° tan60° tan70°) |
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Answer» 2+root3 /root 3 sec 41°sin(90-41°)+cos 49°cosec (90°-49°)×2/root 3 (tan(90°-70)tan60 tan70sec41°cos41°+cos49°sec49°×2/root 3 (cot70×tan70×tan60)1+1×2/root 3 (1×root3)2×2=4....ans... |
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| 8621. |
3x+4y=10 and 2x-2y=2 |
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Answer» 3x + 4y = 102x - 2y = 2 OR x - y = 1Multiply by 3 in equation 2x - y = 1 × 33x - 3y = 3Using Elimination method3x + 4y = 103x - 3y = 3 7y = 7 y = 1Putting the value of y in equation 13x + 4y = 103x + 4 = 10 3x = 10 - 4 3x = 6 x = 2 X=9/13,y=-5/13 |
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| 8622. |
The number of zeroes is 3. Why |
| Answer» Can you please complete your question first | |
| 8623. |
2xx -x+1/8 |
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Answer» 16xx-8x+1=16xx-4x-4x+1=4x(4x-1)-1(4x-1)=(4x-1)(4x-1)=0Hence x =1/4 X=1/4 |
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| 8624. |
135 और 225 |
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Answer» 45 225>135225=135*1+90135=90*1+4590=45*2+00 :. HCF of 135 and 225 is 45..Answer is 45 ..And (*)this is multiple Ohkk |
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| 8625. |
135 aur 225 |
| Answer» 225>135 225=135*1+90 135=90*1+45 90=45*2+00 :. HCF of 135 and 225 is 45.. Answer is 45 .. And (*)this is multiple Ohkk | |
| 8626. |
135 ar 223 |
| Answer» | |
| 8627. |
If the diameter of a semi circular protactor is 14 cm, then find its perimeter. |
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Answer» R is 22 Radius ( r) :- 14/2 = 7 cm Circumference of circle = => 2× pi × r => 2 × 22/7 × 7 cm => 44 cm Perimeter of semicircle = Circumference of circle ÷ 2=> 44/2 cm => 22 cm -: answer |
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| 8628. |
Maths chapter 8 exercise 8.4 m say koi sa question cut h |
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Answer» Yes Sare exercise 8.4 cut h out of syllabus h No |
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| 8629. |
10,-6,-2,2find the comman difference and three more terms |
| Answer» Vehhe | |
| 8630. |
√18÷√50 is irrational or not |
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Answer» √18 ÷ √50 We can write √18 = 3√2 √50 = 5√2√2 is cancelled in both termAnd the result 3/5 which is rational number.It is not a rational number. No |
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| 8631. |
In the given figure, x is equal to:(A). 4cm (B). 5cm. (C). 6cm (D). None of these |
| Answer» Where is figure | |
| 8632. |
A child |
| Answer» full q likho | |
| 8633. |
2x-y=2,4x-6y=4 in graphical method |
| Answer» I can\'t send graph photo on this aap dm me on instagram | |
| 8634. |
If cos A=5/13,then prove that sin A- cosA = tan A/1+tan sq.A |
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| 8635. |
Sec angle theta = √a^2+b^2÷a |
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| 8636. |
2+98 |
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Answer» Shubham Shukla 2+79 |
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| 8637. |
Cbse board exam 2021 class 10 chapter wise marks distribution of all subjects kaha se milega |
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Answer» You can check the syllabus of all subject Ye nhi each chapter m say kitene marks ki kitene questions aaye ge For example- chapter 1 (1 marks question 3 aaye ge and 3 marks question 1 aaye ga ) asay each chapter m say kite questions aaye ge No. System 6 markAlgebra 20 markCoordinate geometry 06 markGeometry 15 Trigonometry 12Mensuration 10Statistics and probability 11 |
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| 8638. |
Solve: x/a + y/b = 2 and ax - by = a^2 - b^2 |
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| 8639. |
Show that the Sum of roots of quadratic eq^n -x^2+3x+3=0 is 3 |
| Answer» Sum of roots = -b/a=-3/1=-3 | |
| 8640. |
NCERT BOOK CHAPTER 8 EX-8.4 Q.5 (5) |
| Answer» No | |
| 8641. |
What is constructions ? |
| Answer» Construction is a general term meaning the art and science to form objects, systems, or organizations, and comes from Latin constructio and Old French construction. To construct is the verb: the act of building, and the noun is construction: how something is built, the nature of its structure. | |
| 8642. |
Find a quadratic polynomial whose sum and product of its zeros are -1/4,1/4 respectively.... |
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| 8643. |
The angle between the two tangents to a circle may be 0°True or False. |
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Answer» False False False No False |
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| 8644. |
If the common difference of an AP is 3, then what is 15 9 a a- ? |
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| 8645. |
word problems of quadratic equation will come or not in board exam |
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Answer» No Bhai No No Noo No bro |
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| 8646. |
(cosec theta - sin theta) (sec theta - cos theta) = sin theta cos theta. |
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Answer» LHS=(cosec theta-sin theta)(sec theta-cos theta)(1/sin theta-sin theta)(1/cos theta-cos theta)(1-sin²theta/sin theta)(1-cos²theta/cos theta)(Cos²theta/sin theta)(sin²theta/cos theta)Sin theta cos theta I |
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| 8647. |
find the value of K for which the equation x power2 + K (2 x-K-1) + 2 = 0 has real and equal roots |
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| 8648. |
Quadratic equations how to check |
| Answer» ax²+bx+c=0If the highest power of an equation is 2 , then it is Quadratic equation | |
| 8649. |
The slant height of a cone is 12cm. If the radius of the cone is 5cm, find the height of the cone. |
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Answer» Base = Radius = 5cm , slant height = hypotenuse =12cmHeight = perpendicular = ?By Pythagoras theoremH^2 = B^2 + P^212^2 = 5^2 + P^2144 = 25 + P^2144 - 25 = P^2119 = P^2√119 = P10•90 cm P r= 5 cm, l= 12 cm using formula , l= √r²+h² = h=√l² - r²=√12²-5² = 10.91cm |
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| 8650. |
Solve for x and y .. x+y=14X-y=4 |
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Answer» Y=5,x=9 Y=5,x=8 x+y = 14x-y = 4Eliminate eq. 1 and 22y = 10y = 5Putting the value of y in eq. 1x+y = 14x+5 = 14x = 14 - 5x = 9 Add x+y = 14 and x-y =4, you will get 2x= 18 then, x = 9 . Now put the value of x in x+y =14 you will get, 9 + y = 14 , then y = 5 |
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