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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
a^1/a=b^1/b=c^1/c & a^bc+b^ac+c^ab=729 find a^1/a |
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Answer» Thanks \xa0Let sayTaking power ABC each side then\xa0\xa0Hence |
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| 2. |
(2a-b-c)^3 |
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| 3. |
Find the zeroes of polynomialf(x)= x²+5x–14 |
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| 4. |
1+2+3=?? |
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Answer» Obviously 6 6 6 6 |
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| 5. |
write 2 rational no between √2 and √3 |
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Answer» We know that,√2 = 1.4142135.....√3 = 1.73205080......As we know that rational numbers are those decimal numbers which are either terminating or repeating.So, you can given any terminating or repeating decimal number between 1.4142135 ...... and 1.73205080 ....... as your answer.Thus your answer can be any of the following rationals:1.415, 1.416, 1.417, 1.532, 1.582, 1.60, 1.62, 1.70, 1.72 etc √2 ≈ 1.414 and √3 ≈ 1.732 . Then we have a rational number 1.5 and 1.6 which is in between √2 and √3. |
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| 6. |
Wht is radius |
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Answer» *half of dimeter* Half of the diameter The half of the diameter Hello Ritika \xa0When we connect a point on the circumference of a circle to the exact centre, then the line segment made is called the\xa0radius\xa0of the ring. The distance between the center of the circle to its circumference is the radius.\xa0 |
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| 7. |
Polynomial ch-2 ex-2.4 Q-4 point-2 |
| Answer» Q. 2x² + 7x +3 Ans.... By splitting the middle term 2x² + (6+1)x +3 2x² + 6x + x + 3 2x(x+3) +1( x+3)(x+3)(2x+1) | |
| 8. |
1.232332333 |
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Answer» Irrational number It is an irrational no. |
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| 9. |
1, 1, 4, 8, 9, 27, 16, 64, 25, ? |
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Answer» 125 125 1sq,1cub.,2sq,2qb.,3sq,3qb.,4sq,4qb.,5sq,_answer__5qb_=125_. 125 125 |
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| 10. |
Find the value of \'s\' if the perimeter is 32cm |
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Answer» Side of square = 8cm The perimeter of square =4 x side. 4 x side =32. Side =32/4. Side =8 32/2=16 The perimeter of square = 4 × side\xa04 × side = 32side = 32/4side = 8 cm\xa0 Perimeter of square = 4*sideP=32cm32cm = 4*side32/4= side8cm = side of square |
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| 11. |
Thickness of a paper is 0.08m write these numbers in standard form |
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Answer» 8.000 ×10-2 2/25m |
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| 12. |
Identify the irrational no.1. √7 - √3 2. 9.98 bar3. √1694. 6.056 |
| Answer» \xa0(2) 9.98 bar.Since 9.98 bar. is a non-terminating and recurring (repeating) decimal.So, it is a rational number.\xa0(3) 169 = 13 * 13 = 132\xa0So, 169\xa0is a perfect square.\xa0Thus, √169 is a rational number.(4) 6.056Since 6.056 is a terminating decimal,\xa0So, it is a rational number. | |
| 13. |
AB and AC are opposite rays |
| Answer» Incomplete question | |
| 14. |
36 degrees 27\'46\'\'+angle 28degree 43\'39\'\' |
| Answer» Answer= 64°70\'85" | |
| 15. |
Factorise: (a – b)3 + (b – c)3 + (c – a)3 |
| Answer» 2 (a-b-c)3 | |
| 16. |
Trinomial of degree 6 |
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Answer» √5x⁶+3x+2 is a trinomial of degree 6 √2x-1 |
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| 17. |
To become engineer we can choose biology subject |
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Answer» No No No |
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| 18. |
5+5+5+5+ |
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Answer» 5+5+5+5=20 20 5+5+5+5 =20 20 |
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| 19. |
Rationalise the denominator of 1/root5+root3 |
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Answer» 1/√5+√3= 1/√5+√3×√5-√3/√5-√3= √5-√3/(√5)^2-(√3)^2 {(a+b)(a-b)= (a)^2-(b)^2}=√5-√3/5-3=√5-√3/2 ans...Do you satisfied to my given answer???? =1× root 5 - root 3/root 5 + root 3× root 5 - root 3 =Root 5 - root 3/ root 5 square - root 3 square =Root 5 - root 3 / 5 - 3 = Root 5 - root 3/2 Ans. |
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| 20. |
Two irrational number between 1/7 and 1/9 |
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Answer» Infinite rational number What is Matter? |
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| 21. |
Is maths ncert lesson 8 included in exams?? Pls reply me soon |
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Answer» Yes Yes |
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| 22. |
How to represent √7 on number line??? |
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Answer» 2.64 Draw a\xa0number line\xa0and mark 0, 1, 2, 3, ....etc.Mark 0 as point O and 2 as B.Now from B, draw a perpendicular AB of length 1 unit.Join OA. ...Again From A, draw a perpendicular AC of length 1 unit.Join OC. ...Again From C, draw a perpendicular CD of length 1 unit.Join OD. |
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| 23. |
Give the equation of two line passing through (2,14) . How many such line are there and why ? |
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Answer» x+y=163x+y=20there are infinetly many solutions passing through a line The equations of two lines passing through (2, 14) can be taken asx + y= 16and\xa07x – y = 0.There are infinitely many such lines because through a point an infinite number of lines can be drawn. |
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| 24. |
Maths chapter 1 EXERCISES 1.1 |
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| 25. |
Give the construction to find a centre of a circle |
| Answer» Do it yourself | |
| 26. |
abcd is a parallelogram find 2 angle abc - angle adc and angle c is 70 class 9 |
| Answer» Angle adc=70,Angle acd=110 | |
| 27. |
To go in Google we have to choose which engineering |
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Answer» Computer engineering Computer engineering and civil engineering |
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| 28. |
What is the question paper of Math class 9 |
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| 29. |
0.7 lies between which quadrant |
| Answer» (0, 7) lies on y -axis | |
| 30. |
5x_4x+3 |
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Answer» Ok I write full question Write full questions |
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| 31. |
Four solutions of 2x+y=7 |
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Answer» -1, 90, 71, 52, 3 Given equation is:2x+y=7For x = - 1, we get−2+y=7⇒y=9\xa0∴\xa0(-1, 9) is a solution.\xa0For x = 0, we get⇒0+y=7⇒y=7\xa0∴\xa0(0, 7) is a solution.\xa0For x = 1, we get⇒2+y=7⇒y=5∴\xa0(1, 5) is a solution.\xa0For x = 2, we get⇒4+y=7⇒y=3\xa0∴\xa0(2, 3) is a solution.\xa0Hence, we have four solution\xa0(−1,9),(0,7),(1,5)and(2,3) |
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| 32. |
Rd sarma book |
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| 33. |
if x=0 and y=k is a solution of equation 5x-3y=3 find the value of k. |
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Answer» 5x-3y=3It is given that x=0&y=kThen, 5(0)-3(k)=3(5×0)-(3×k)=30-3k=3-3k=3K=3÷(-3)K=-1So the answer is -1 5x-3y=3put x = 0 and y = k5 (0) - 3 (k) = 3-3k = 3k = 3/-3k = -1 |
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| 34. |
In a trapezium if non-parallel sides are are equal, then it is called a _____ trapezium. |
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Answer» Isoceles Isosceles |
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| 35. |
Write an equation of a line parallel to x-axis and passing through the point (3,2) |
| Answer» We know that The equation of line which is parallel to x-axis is y = k.Given that, Equation of line passes through (3,2) so, y = 2 , x = 3.So, The equation of line is y = 2 . | |
| 36. |
Factorise: 8p cube+12/5p square+6/25p+1/125. |
| Answer» Answer:Step-by-step explanation:/*\xa0By\xa0algebraic\xa0identity:a³+3a²b+3ab²+b³\xa0=\xa0(a+b)³\xa0*/Therefore, | |
| 37. |
If x/y + y/x=-1( where x,y is not equal to 0) then find the value of xcube - ycube |
| Answer» \xa0We know that,x3\xa0- y3\xa0= (x - y)(x² + xy + y²) ....(i)Given that, x/y + y/x = -1(x² + y²)/xy = -1x² + y² = -xyx² + y² + xy = 0(x² + xy + y²) = 0Multyplying by (x - y) on both sides we get,(x - y)(x² + xy + y²) = (x - y) × 0x3\xa0- y3\xa0= 0 using (i) | |
| 38. |
Which whole number represents the y coordinate of any point lying on the x axis? |
| Answer» 0If a\xa0point lies on the x-axis\xa0then its\xa0y-coordinate\xa0is 0. Similarly, a\xa0point\xa0on the\xa0y-axis\xa0has its\xa0x-coordinate\xa00. The origin has\xa0coordinates\xa0(0,0). On the right you see an example of a (Cartesian)\xa0coordinate\xa0plane with some\xa0points\xa0sketched in it. | |
| 39. |
Examine whether x+2 is a factor of x3 + 3x2 + 5x + 6. |
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Answer» Ok {tex}P(x)=x^3+3x^2+5x+6{/tex}g(x)=x+2 x=-2put x=-2 in p(x){tex}p(-2)=(-2)^3+3(-2)^2+5(-2)+6{/tex} =-8+12-10+6 =0since p(x) is zero\xa0x+2 is a factor of\xa0{tex}x^3+3x^2+5x+6{/tex} |
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| 40. |
I want to know the line that are drawn near to dA/dr from application of derivative chapter |
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| 41. |
find five rational number between 3/5 4/5 |
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Answer» 3/5 , 4/5 3*5/5*5. , 4*5/5*515/25. , 20/2515/25. , 16/25. , 17/25. ,18/25. , 19/25. , 20/25 Question -3 Find five rational numbers between 3/5 and 4/5.Solution:\xa0Since we want five numbers, we write 3/5 and 4/5 So multiply in numerator and denominator by 5+1 =6 we get |
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| 42. |
3 aur aur 4 ke bich ki parimay sankhya gyat Karen |
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| 43. |
Visualise 4.26 on the number line,up 4 decimal places. |
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| 44. |
Visualise 3.765 on the number line, successive magnification. |
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| 45. |
find the two rational between 5/7 and6/7 |
| Answer» Solution :- | |
| 46. |
Find the value of (2.7)³ - (1.6)³ - (1.1)³ using a suitable identity |
| Answer» {tex}2.7^3-1.6^3{/tex}{tex}=(2.7-1.6)^3+3(2.7)(1.6)(2.7-1.6){/tex}{tex}=(1.1)^3+3(2.7)(1.6)(1.1){/tex}{tex}=(1.1)^3+14.256{/tex}{tex}2.7^3-1.6^3-1.1^3{/tex}{tex}=(1.1)^3+14.256-(1.1)^3{/tex}{tex}=14.256{/tex} | |
| 47. |
Factorise : 8x³ - 27y³ + 125z³ + 90xyz |
| Answer» 8x3−27y3+125z3+ 90xyzUsing,a3+b3+c3−3abc=(a+b+c)(a2+b2+c2−ab−bc−ca)\xa0Here,a=2xb=−3yc=5z,Therefore,=>(2x)3+(−3y)3+(5z)3−3×2x×(−3y)×5z=(2x−3y+5z)(4x2+9y2+25z2+6xy+15yz−10xz) | |
| 48. |
Find five rational numbers between 3/5and 4/5 |
| Answer» Find five rational numbers between 3/5 and 4/5.Solution:\xa0Since we want five numbers, we write 3/5 and 4/5 So multiply in numerator and denominator by 5+1 =6 we get | |
| 49. |
Expand each of the following using suitable identities (-2x+5y-3z)² |
| Answer» We know that(a+b+c)² = a² + b² + c² + 2(ab + bc + ca)So,(-2x + 5y - 3z)²= (-2x)² + (5y)² + (-3z)² + 2 [ (-2x)*5y + 5y*(-3z) + (-3z)*(-2x) ]= 4x² + 25y² + 9z² + 2 [ (-10xy) + (-15yz) + 6xz ]= 4x² + 25y² + 9z² - 20xy - 30yz + 12xz | |
| 50. |
solutions for CBSE mathematics 2020 code 30/3/3 |
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