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. |
-uu pay for it?U LIJ, Weby making a profit of 2%A shopkeeper sells a small geyser for 3360 and gains one-sixth of its cost price. Find his gain percent7 # 118 |
|
Answer» wrong answer |
|
| 2. |
9x/10x+5x |
| Answer» | |
| 3. |
-(5x + 1)(25x2-5x + 1)(2x-5)(4x2+10x+25)-x |
| Answer» | |
| 4. |
25. Prove that :सिद्ध कीजिए --sin A +l+cosA [ _cosA +l+smA Sk s AI+cosA sin A l1+sinA cosAS hiae |
| Answer» | |
| 5. |
e R2... उचित गुणधर्मों का उपयोग करते हुए गुणनफल ज्ञात कीजि!() 1487 x 327 + (—487) X 327 (=) 3 |
|
Answer» 1487×327 + (-487)×327 = 327 × (1487-487) = 327 × 1000 = 327000 |
|
| 6. |
us 13bisects the triangll lof trapezium.of rhombus.wer Type QuestionsC and BD of a trapezium ABCD with ABI DC intersect each other atO, shArea(A AOD)- Area(A BOc)the area of quadrilateral ABCD in given figure ().117 cmCS 6 cm R8 cmFig. 14.41e the area of trapezium PQRS in given figure (i) |
| Answer» | |
| 7. |
In figure, O is the centre of the circle LBCO 30°. Findxandy.30° |
| Answer» | |
| 8. |
3. Divide a2b2 -2abc + c2 by (ab -c) |
|
Answer» a²b² - 2abc + c²a²b² - abc - abc + c²ab(ab - c) - c ( ab - c)(ab-c) (ab -c)(ab-c)² So, division is a²b² - 2abc + c²------------------------ (ab -c) (ab-c)²----------- (ab -c) (ab-c) |
|
| 9. |
Show that numbers 8^n can never end with digit 0 for any natural number n |
| Answer» | |
| 10. |
10x=30, find X? |
|
Answer» 3 is the right answer 3 is the right answer 3 is the right answer 3 is the right answer 3 is the correct answer of the given question 3 is the right answer 5 is the right answer 3 is the right answer 3 is the right answer 3 is the right answer 3 is the right answer 3 is the right answer If,10x=30,Then,x=3. 3 is the right answer 3 is the right answer |
|
| 11. |
then the solution of equations a, x+b, y + c = 0 and ax + b2y + 210. If 410.12. - . then the solution of equations a, x +by+9 = 0 and azx + boy + c3 = o has how1 = 0 and ax + b2y + C2 = 0 has howA2 B2many solutions? |
|
Answer» If this is the given condition the result are consistent that is it has a unique solution. |
|
| 12. |
4. If S is 150 percent of T, then T is what percentofS+T |
|
Answer» S=150/100T=1.5Tso S+T=T+1.5T=2.5Tso T=10/25*100(S+T)=40%(S+T) |
|
| 13. |
4. IfS is 150 percent of'1, then T is whal pereell Uvendor sells 60 percent ofapples he had and throws away 15 percent of the remainder. Next day he sells 50percent ofthe remainder and throws away the rest. What percent of his apples does the vendor throw? |
| Answer» | |
| 14. |
60. + 6 P QThe value of p2 + Q2 is169(3) 41(2) 534) 65 |
|
Answer» 1 2 P+6 P Q-------------- P 0 9 Possible Value of P = 8, Q = 1 Then, value of P^2 + Q^2= (8)^2 + (1)^2 = 64 + 1 = 65 (4) is correct option ice-cream cone im an example or a |
|
| 15. |
Q2. A vertical pole of length 6 m casis a shadow 4 m long on the groundand at the same time a tower casts a shadow 28 m long. Find theheight of the tower |
| Answer» | |
| 16. |
If the sum of the roots of the equation x2+ px + gs1) p2-31.3) 64) 2462) 2p2 9qpx + q = 0 is 3 times their32,If the difference hetu4)p2 + q2 = 43) 4p2 14qlifference between the |
|
Answer» let the roots be a and b now a+b = -p/1 = -p...... iand ab = q/1 = q.......... ii now ATQ , (a+b) = 3(a-b) => 2a = 4b => a = 2b now putting the value of a and b in eq 1 and 2 we get, 3b = -p or b = -p/3, and from eq...2 , 2b² = qso, 2(-p/3)² = q => 2p²/9 = q or 2p² = 9q. option B. |
|
| 17. |
Q2, A vertical pole of lengtl 6 m casis a shadow 4 m long on the groundand at the same time a tower casts a shadow 28 m long, Find theheight of the tower |
| Answer» | |
| 18. |
If A's income is 10 percent morethan B s, then what percent is B' s income less |
|
Answer» If A's income is 10 % more than B .... So B's income less than A is.... = 10 / ( 10 + 100 ) × 100 %= 10/110 × 100 %= 1000/110 %= 9.09 % ..... |
|
| 19. |
Q2 A vertical pole of length 6 m casts a shadow 4 m long on the groundand an the same time a tower casts a shadow 28 m long. Find thebeight of the tower |
| Answer» | |
| 20. |
. By what percent is 2000 less than2400? Is it the same as the percent by which ? 2400is more than2000? |
|
Answer» the answer is -100 |
|
| 21. |
There are 500 students in the school in Dahihanda village. If 350 of thenswim, what percent of them can swim and what percent cannot ? |
|
Answer» percent student cam swim are = 350/500 * 100 = 70% so percent student can not swim are 100-70=30% |
|
| 22. |
The complete solution set of x forIf(x) + 6-刈=lf(x)I +14-刈+2, given that |
|
Answer» For a function to follow |f(x) +g(x)| = |f(x)| +|g(x)| , both the functions must be positive for all the domains inside it. so, here f(x) ≥ 0 , 4-x² ≥ 0 and 2 > 0 ✓ so, 4-x² ≥ 0=> x²≤4 => x belongs to [-2,2] |
|
| 23. |
u莢lf (x+ 1 ) is a factor of ax"+x2-2x+4a-9, find the value of |
|
Answer» if X+1 is a factorby putting X=-1a(-1)^3+(-1)^2-2(-1)+4a-9=0-a+1+2+4a-9=03a-6=0a=6/3=2hence a =2 |
|
| 24. |
lf 4in-1 xcos-1 x=a, then x is equal to |
| Answer» | |
| 25. |
lf p(x) = x3-x2 + x + 1, then find the value of Zin-1)+ pah |
|
Answer» p(-1)=-1-1-1+1=-2p(1)=1-1+1+1=2(1/2)[p(-1)+p(1)](1/2)(0)=0 |
|
| 26. |
जि का कि का भा R 3fam ¥, AD L BC है। सिद्ध कीजिएAB2 +CD? =BD? +AC* |
|
Answer» Answer the question Answer the question Answer the question thanks |
|
| 27. |
Find the highest number which divides 27 and 45 exactly. |
|
Answer» The highest number which exactly divides 27 and 45 is the HCF(27, 45).HCF(27, 45) = 9 Therefore, the required number is 9. thanks |
|
| 28. |
A number is increased by 20 percent and then the increased number is decreased by 20 percent, then the net decrease is...? |
|
Answer» Increased number =120 Σ( ° △ °) sorry wrong answer increased number =120% of x= 120 ÷100 ×x= 6x÷ 5deceased number =80% of 6x÷5=24x÷25net decrease =X-24x÷25=x÷25net decrease percent =(x÷25×1÷x×100)%=4% |
|
| 29. |
Solution:) There are 500 students in a village. If 350 of them can swim, what percent of therwhat percent cannot?tion: |
|
Answer» Percentage of children who can swim= 350/500*100= 70 Percentage |
|
| 30. |
in tigure if AD- 6em, DB-9cm. AE- Bem and EC 12cm and ADE 48°. Find LABC |
| Answer» | |
| 31. |
Q.5 In the given tigure, AC BC. DCAthat △ DBC-△ LAC and DC-LC.FCB and LPRCLFAC. Prove13 |
|
Answer» consider triangle PAC and QBCAC = BCangle PCA = angle QCBangle PAC = angle QBCso ∆PAC is congurent to ∆QBC by ASA ruleso again consider traingle DBC and EAC which congurent by ASA rule by CPCT DC = ECadding ∆PAC = ∆QBC and ∆ EAC = ∆ DBC so , we get ∆ ACE = ∆ DBC proved |
|
| 32. |
किFind dx,lf y=e -tanx. |
| Answer» | |
| 33. |
[Lf =6+ N |
|
Answer» Ans :- 4x/3 + 9 = 17 4x/3 = 17 - 9 4x/3 = 8 4x = 8×3 4x = 24 x = 24/4 x = 6 Thanks |
|
| 34. |
(1) lf x + y = 7 and x=-1, find y. |
|
Answer» x + y = 7........(1)x = -1.............(substitute in equation 1)-1 + y = 7y = 7 + 1 = 8 Hit like if you find it useful |
|
| 35. |
LF THE NEAN OF FINE OBSERVATIONFfnd the iven observaion |
|
Answer» mean={(x+2)+(x+4)+(x+6)+(x+5)+(x+8)}/520=(5x+25)/520=x+5x=16 so the observation are 18,20,22,21,26 |
|
| 36. |
Solv e |
|
Answer» 2/15 + 7/18={2(6)+7(5)}/90=(12+35)/90=47/90 |
|
| 37. |
Solv224 |
| Answer» | |
| 38. |
1lf x _ y = 8 and xy = 5, find x2 + y2. |
| Answer» | |
| 39. |
(a)-9(b) 9(c) 27(d)-27 |
|
Answer» hit like if you find it useful |
|
| 40. |
32. Find the values of the angles x, y and z in the giveh tigure!50*43 |
|
Answer» In given fig. z = 50° (vertical opposite angles) x + 45 + z = 180 (linear pair)x + 45 + 50 = 180x = 180 - 95 = 85 y + z = 180 (linear pair) y + 50 = 180y = 180 - 50 = 130 |
|
| 41. |
eming tigure, ABC is a triangle in which AD is the bisector of LA. If AD L BC, show that AABCsosceles.BD |
| Answer» | |
| 42. |
थे] c-.vk‘ -2 G C p ) —[ —A )3I | हा B #l !9 C) :D 1 =5 है |
| Answer» | |
| 43. |
2. The circumference of the base of aconical tent is 44 cm. If the height oftent is 24 m, find the length of thecanvas used in making the tent, if thewidth of the canvas is 2 cm.(Use π)[CBSE 2012] |
| Answer» | |
| 44. |
\frac { - a ^ { - 5 } } { - a ^ { 10 } b ^ { - 9 } c ^ { - 7 } \times ( a ^ { - 15 } \times c ^ { 0 } ) } |
| Answer» | |
| 45. |
9. A military tent of height 8.25 m is in the form of a right circular eyrof base diameter 30 m and height 5.5 m surmounted by acone of same base radius. Find the length of canvas used in making thetent, if the breadth of the canvas is 1.5 m.[CBSE 2012] |
| Answer» | |
| 46. |
h) (8-9) (8+89+0) वे जगास- 3F)(a-b)’ y) a+b’ ) (a+b)® 7) a’-b? |
|
Answer» (a-b)(a²+ab+b²)=a³+a²b+ab²-a²b-ab²-b³=a³-b³ thanks |
|
| 47. |
Define insurance ?Explain the charectristics of insurance |
|
Answer» Insurance is an arrangement in which you pay money to a company, and they pay money to you if something unpleasant happens to you, for example if your property is stolen or damaged, or if you get a serious illness. Natureor Characteristics of Insurance Contract. Consideration. Co-operative Device. Protection of financial risks. Risk sharing and risk transfer. Based upon certain principles. |
|
| 48. |
6. Show that any positive odd integer is of the form 8q + 1, 8q +3,89 +5 or89 + 7, where q is some integer.[HOTS] |
|
Answer» Let a be any positive integer and b =8 ,then , ecluid algorithm , a = 8q +r for some integer q >or = 0 and r = 0,1,2,3,4,5,6,7 0 <,= r <= 7 then , 8q +1 = 2 x 4q +1 2m +1, where m is any positive integer = 4q 8q+3 = 8q +2+1 2 (4q +1) +1 => 2 m +1 , where m is any positive integer = 4q +1 8q +5 = 8q + 4+1 2 (4q +2) +1 =2 m +1 , where m is any positive integer = 4q+2 8q +7 = 8q + 6+1 2( 4q +3) +1 =2m +1 , where m is any positive integer = 4q +3 this means that 8q +1, 8q+3 , 8q+5 and 8q+7 cannot be exactly divisible by 2 . Hence any odd no. can be expressed in the form of 8q+1 , 8q+3 , 8q+5 and 8q+7 |
|
| 49. |
2/x-3/y = 15; 8/x+5/y = 77 |
| Answer» | |
| 50. |
2/x - 3/y =15 ; 8/x + 5/y =77 |
| Answer» | |