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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.
| 2451. |
Re verification of marks ke liye apply kab karna hai |
| Answer» Search on googleCbse.nic.in in 2019...waha sb procedure mojood hai | |
| 2452. |
Sin20.Sin40.sin60.sin80=3/16 (prove that ) |
| Answer» sin20. sin 40. sin60. sin80\xa0=> sin60[sin20.sin40.sin80]\xa0=>√3/2[sin20.sin(60-20).sin(60+20)]\xa0=>√3/2[sin 3(20)/4]\xa0=>√3/2[sin 60/4]\xa0=>√3/2[√3/2*4]\xa0=>√3/2*√3/8\xa0=3/16\xa0 | |
| 2453. |
{x: x+5=5}={0} true or false |
| Answer» True | |
| 2454. |
Find the range f of x is equal to underoot 9 minus x square |
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| 2455. |
The set (AUB\')\'U(B∩C) is equal to? |
| Answer» | |
| 2456. |
When result will come |
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Answer» Results will come in the 2nd week of may anytime On 6 may , may be Mr "Topper" ,CBSE confirms that the date and time of class 10 results will be a surprise,but before 11 May.Results NOT TODAY. 2 week of may When you will die |
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| 2457. |
What is superset. |
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Answer» Superset is just opposite to subset If A is a subset of B,then B is superset of A. superset of A contains all the elements of A |
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| 2458. |
Show that for any set A and B,A=(A intersection B) union (A-B) and A union (B-A) = (A union B) |
| Answer» We have(A intersection B)union(A intersection B\') ,since( A -- B)=A intersection B\'.==>A intersection (B union B\'), by distributive law .==>A intersection U ,as B union B\'=U(union set).==>A.Also,we have A union (B -- A)==>A union (B intersection A\')==>(A union B ) intersection (A union A\')==>(A union B) intersection U ,since A union A\'=U==>A union B | |
| 2459. |
Is chapter wise questions are available |
| Answer» Yes bro | |
| 2460. |
Find amplitude of z =(1+i) |
| Answer» Bbb | |
| 2461. |
genral solution of trigonometric equation sin©=4sin©.sin(x+©).sin(x-©). Where(©≠npie, |
| Answer» | |
| 2462. |
the trigonometry is only apply in a right angle triangle so how the values of 180 can exist |
| Answer» Well bro in cartesion system trigonometry applies to angles not to triangles. Tje triangles are a way to represent such angles | |
| 2463. |
How can i download elements mathematics (FOUNDATION) book solution |
| Answer» | |
| 2464. |
Find the square root of 1+i |
| Answer» | |
| 2465. |
K(k+1)(k+2)÷3 |
| Answer» We first take P (n)=1 Then,P (n)=1 (1+1)(1+2)=1 (2)(3)P (n)=6Therefore 6is divisible by3 So,P (n)is true for 1Now let us assume k (k+1)(k+2)=3xNow let p (n)=k+1So,K+1 (K+2)(K+3)SO IF K(K+1)(K+2) IS DIVISIBLE BY 3 SO EITHER ONE OF THEM IS DIVISIBLE BY 3IF K IS MULTIPLE OF 3 SO IN K+1 (K+2)(K+3)K+3 IS MULTIPLE OF 3 SO THE ABOVE NO. IS DIVISIBLE BY 3SIMILARILY THE CASE APPLIED WITH K+1 AND K+2WE GET IN ALL CASES 3 IS DIVISIBLE THEREFORE K (K+1)(K+2) IS DIVISIBLE BY 3HENCE PROVED | |
| 2466. |
Formula of (a-b)² |
| Answer» (a - b)2 = a2 - 2ab + b2 | |
| 2467. |
Prove 1+tan55+tan55*tan100=tan100 |
| Answer» | |
| 2468. |
| a + ib |= 1 |
| Answer» | |
| 2469. |
A union B is equals to c and A intersect B is equal to fi so prove that A equals to C minus B |
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| 2470. |
Sin105+cos105=cos45 |
| Answer» | |
| 2471. |
If z1=z2=z3.........=zn=1 then prove that 1/z1+1/z2+1/z3+.........+1/zn=z1+z2+z3+.........+z4 |
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| 2472. |
Write all the possible subsets for {1,2,3,4,5} |
| Answer» {1},{2},{3 },{4},{5},{1,2},{1,3},{1,4},{1,5},{2,3},{2,4},{2,5},{3,4},{3,5},{4,5},{1,2,3},{2,3,4},{3,4,5},{1,3,4},{1,4,5},{2,4,5},{1,3,5},{1,2,4},{2,3,5},{1,2,5},{1,2,3,4},{2,3,4,5},{1,3,4,5}{1,2,4,5},{1,2,3,5},{1,2,3,4,5},{ø}. | |
| 2473. |
If z-1/z+1 is purely imaginary find modulus z |
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| 2474. |
If cos(A-B)=p and sin(A+C)=q then prove that p^2+q^2-2pqsin(B+C)=cos^2(B+C) |
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| 2475. |
Cotπ /8-tanπ/8=2 |
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| 2476. |
Ex 2.2 questions no 5 |
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| 2477. |
School awarded 42 medals in hockey |
| Answer» this is example | |
| 2478. |
Find the derivative of f(x) = secx using first principal |
| Answer» | |
| 2479. |
Had CBSe changed the pattern of question paper from this year? If yes, then in which ways?? |
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Answer» 4- 6 marker questions Yes now there are 20-1 marker questions ,6 2marker, 6 4markers and No pattern has been changed till today. |
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| 2480. |
(k-1)x^2=kx-1 find K so that one root is -3 |
| Answer» (k-1)x^2=kx-1This can be written as;(k-1)x^2-(kx-1)=0(k-1)x^2-kx+1=0Put x= -3 as this is a zero of polynomial: (k-1)(-3)^2-k(-3)+1=0 (k-1)(9)+3k+1=0 9k-9+3k+1=0 9k+3k-9+1=0 12k-8=0 12k=8 k=8/12 k=2/3So, the value of k is 2/3 so that one of the zero of this polynomial is -3.#Hope this may be helpful for you... | |
| 2481. |
2^n+1=5 |
| Answer» 2n^2+1=5We need to find the value of n here;So, 2n^2+1=5 2n^2=5-1=4 2n^2=4 n^2=4/2=2 n=+-√2 n=+√2 or -√2 | |
| 2482. |
Sin square (a+b)-Sin square (a-b) = sin 2a .Sin 2b |
| Answer» | |
| 2483. |
let A={1,2,3,4} B={1,2,3} C={2,4} find all sets X such that X is a subset of B but not of C |
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Answer» Please give explanation Ans is {1,3} |
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| 2484. |
can i get some last year compartment papers??? plz help me!! |
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Answer» no, i m note fail. i have compartment in maths exam so that\'s why i wamt last year paper pf compartment for practice.? Why r u fail |
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| 2485. |
Prove that B⊂aub |
| Answer» What is the value of a and b | |
| 2486. |
f(x)=x×x+1\\x |
| Answer» | |
| 2487. |
If tan2x =cot(n-2)x then what is x? |
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| 2488. |
Proof of demorgans law |
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| 2489. |
What is the difference between relation and function |
| Answer» Every function is a relation but not every relation is a function .For a function to become relation it has two follow two rulesIf A and B are two non empty -sets then #1 domain of relation should be whole set A#2 Each element of set A can have only 1 relation | |
| 2490. |
If angle theta is amplitude of a+ib/a-ib. Find tan theta |
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| 2491. |
Which book I should prefer for maths.. |
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Answer» R D sharma Only follow NCERT book through this u can score more in board RD sharma best book ever Thanks RD SHARMA???????????? |
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| 2492. |
If 2p th term of a GPis q^2 and 2q th term is p^2 then p+q th term is |
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| 2493. |
What are the last two digits of 2008 The answer is 01 how ? Please explain this . |
| Answer» Its 0 and 8 | |
| 2494. |
Find the orthocentre of the triangle with the vertices (-2,-1) (6,-1) (2,5) |
| Answer» | |
| 2495. |
Is there any chance of getting admission in kurukshetra NIT if i get 65 marks in JEE Mains 2019 |
| Answer» | |
| 2496. |
If a-x/px = a-y/qy = a-z/rz and p ,q ,r are in A.P show that 1/x , 1/y , 1/z are in A.P |
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| 2497. |
y2=8x |
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| 2498. |
Write the set buildercform ofcreciprocal of natural no. |
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Answer» A={x:x=1/n,where n€N} Hope it helps....? You can also write, A={x:x is a natural no.} A={x:x=1/m, m€N) |
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| 2499. |
Root of /2 |
| Answer» | |
| 2500. |
Using the principal of mathematical induction, prove that1/1*3+1/3*5+....... +1/(2n-1)(2n+1)=n/2n+1 |
| Answer» | |