Explore topic-wise InterviewSolutions in Current Affairs.

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.

Prove the following by using the principle of mathematicalinduction 13 + 23 + 33+......+ n3 =

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2.

eare some English sentences Translate them into mathematical equationssolve them. Also check the results.11. 7 more than twice a number is 35.12. 8 les than thrice a number is 7513. If 5 is subtracted from three times a number, the result is 16.4. If 9 is added to a number, the result is 365. If-, which added to a number is equal to-.

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3.

d.What is the smallest number by which 81 should be divided to make it a perfect square ?27ot of 0 0s 7. Find the cube root of-21

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9 is the required answer

how please give the statement to alive

because after dividing 81 from 9 answer will be 9 and nine is perfect square of 3

anwer is three

which school from you are

your question was wrong bro

there will be cube instead of squate

4.

27. If tan 0 =find that sin 0 + cose

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sin = 24/25cos = 7/25sin + cos = 31/25

5.

The vector having initial and terminal points as(2, 5, 0) and (-3, 7, 4) respectively is(a) -i +12j+ 4k(c) -5i +2j+4(b) 57 +2j -4k

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vector will be(-3-2)I+(7-5)j+(4-0)k-5i+2j+4k

6.

संतुलित रासायनिक समीकरण लिखें।म्नलिखित अभिक्रियाओं में ऑक्सीकारक की पहचi) Pb,0, + 8HCl → 3PECI, + CI, +4i) 3Fe + 4H,0→ Fe0, + 4H,1) 2Mg + 0, → 2MgOतरीय प्रश्नसायनिक समीकरण क्या है? निम्नांकित से

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3) combination reaction. 2) oxidation reaction. 1) this is also oxidation reaction

7.

inant of the equation 6x bx +2is i, then tind the value of b.OR

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(b^2-4*6*2)^1/2 =1Squareing both sides=> b^2-4*6*2=1=>b^2-48=1=>b^2=48+1=>b^2=49=>b=+/-(49)^1/2=>b=+/-7Henceb=7 or b=-7

8.

Twelve persons meet in a room and each shake hands with all the others.findnumber of hand shakes.

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12 people shaking hands, so 11 + 10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 66 handshakes.

No.of handshakes = ( No.of people -1)+(No.of people-2)+........+( No.of people-No.of people) = (12-1) +(12-2) +....+(12-12) = 11+10+9+8+7+6+5+4+3+2+1= 66

9.

Mathematics ClaIn the given figure, ABCD is a rectangle. Find the values of x and yx+y-3x + y13B

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10.

7. If there are 15 persons in a party, and if each of themshake hands with each other. Then the number ofhandshakes in the party is:

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11.

J. Iwelve persons meet 'in a room and each shake hands with all the others. anumber of hand-shakes

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The first person would shake hands with 11 people. The second person, will shake hands with 10 other people, as he has already shaken hands with the first person, the third will shake hands with only the other 9,and so on…

so the total number oandshakes will be

11+10+9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1

or simply 11x12/2 = 66 handshakes

thanks aur ques Ka bhi toh javab bhejo

jaldi say jaldi

Phir se post kro

12.

4. Show that the diagonals of a square are equal and bisect euch other at right angles,

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13.

multipleIf 1 and y are positive integers euch that Gir + Ty) is aollowing will be divissble by 11of 11, then which of the.y.44-9

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By hit and trial method, we get x=5 and y=1 such that 3x + 7y = 15 + 7 = 22 is a multiple of 11.

Then

(4x + 6y) = (4 × 5 + 6 × 1) = 26 which is not divisible by 11

(x + y + 4) = (5 + 1 + 4) = 10 which is not divisible by 11

(9x + 4y) = (9 × 5 + 4 × 1) = 49 which is not divisible by 11

(4x - 9y) = (4 × 5 - 9 × 1) = 20 - 9 = 11 which is divisible by 11

14.

the Sum atoms am APthe sama as the umtu/m

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15.

14. Calculate the area of the designed region in the given figure common between the twoquadrants of circle of radius 8 cm each.8 cm90°90°ー8cm

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16.

1. Draw different pairs of circles. How many points does each pair have in common?What is the maximum number of common points?

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17.

1.Draw different pairs of circles. How many points does each pair have in common?What is the maximum number of common points?

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18.

Draw different pairs of circles, How many points does each pair have in commonWhat is the maximum number of common points?I.

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19.

Example 10. An altitude of a triangle is five-thirds the length of its corresponding base. If the alitusis tacreased by 4 cm and the baso is decreased by 2 cm, the area of the triangle remains the sama EFind tve base and altitude of the triangle

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Thank you

20.

Draw different pairs of circles. How many points does each pair have in common?What is the maximum number of common points?I.2. Suppose

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21.

Q. 1. Who was Edison? Describe the invention thatmade him famous all over America.12009, 13, 17]Or Which invention did make Edison famous? 12018)

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Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman, who has been described as America's greatest inventor. He is credited with developing many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures.Inventor Thomas Edison created such great innovations as the practical incandescent electric light bulb and the phonograph. A savvy businessman, he held more than 1,000 patents for his inventions.

22.

EXERCISE 10.31. Draw different pairs of circles. How marcachWhat is the maximum number of common points?

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tq

23.

Mohan bought a television of 5863. Due to some defects in it, he had parepair. Then he sold it?4800. Find his loss %

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24.

le Draw different pairs of circles. How many points does each pair have inWhat is the maximum number of common points?

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25.

1. Draw different pairs of circles. How many points does each pair have in commontWhat is the maximum number of common points?

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26.

Name the famous wildlife sanctuary in J&K

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The answer is Nandini Wildlife Sanctuary(Nandini).

27.

I. Draw different pairs of circles. How many points does each pair have in commeWhat is the maximum number of common points?

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28.

0.14Mathematics for Class Vil5. The inside perimeter of a running track (shown in Fig. 20.24) is 400 m. The length ofeach of the straight portion is 90 m and the ends are semi-circles. If track iseverywhere 14 m wide, find the area of the track. Also, find the length of the outerrunning track.10 cm8 cm: 10 cm6 cm14 mFig. 20.24Fig. 20.25

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29.

a triangle ABC, AD is a bisector of AAC. If AB = 10 cm, AC= 14 cm and BC= 6 cm, find BD.

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30.

mohan bought 20 dining tables for rs 12000 and sold them at a profile equal to the s.p of 4 dining tables find the s.p of each table

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if it is helpful please like it

31.

Rs 15. Mohan bought 20 dining tables for Rs 12000 and sold them at a profit equal to the S.P. of 4 diningtables. Find the S.P, of each table.Rs16. Mr. X bought a car for Rs 135000. He spent Rs 25000 on it as repairs and sold it for Rs 165000Rs Find his profit per cent.

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he profit 3.125 percent profit

32.

(3) mn + NX - mz - nzSolution:

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n(m+x)-z(m+n)=(m+x) (n-z) (m+n)

mx + nx - mz - nz = x( m + n) -z( m + n) = ( m + n)( x - z)

(m - n)(x - z)this is the correct answer for this question Thank you

33.

I. Degree of a polynomial 4x2 + χ-1 ts 2 or 3?

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The degree of polynomial is 2 because the highest power of variable is 2

34.

pw SwekhE L

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If you find this solution helpful, Please give it a 👍

35.

7, Mohan bought 20 dining tables for12,000 and sold them at a profit equal to theS.P. of 4 dining tables. Find the S.P. of 1 table[Hint: Suppose, SP. of l table-き1. Find gain % first.)

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36.

obtaened ts(A) a tr(c) Co-2)(a-3)a-2) Ca-3) CE(aa3)

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37.

8. In Fig., DE || QR and AP and BPare bisectors of 2 EAB and £ RBA, respectively.Find ZAPB.आकृति में 09४ || 00२ एवं &7? और 8? क्रमश८ 88 एवं ८ ११84 का समाद्िभाजक है। ८85ज्ञात करें।

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38.

(3) 6 tables cost6060. How much should be paid for 12 tables?Solution:

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39.

evolume of a hemisphere is 24257cm3. Find its curved surface area.CBSE 2012]The volume of a h

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40.

Putu We vouA toy is in the form of a cone mounted on ahemisphere of same radius 7 cm. If the total heightof the toy is 31 cm, find its total surface area.(CBSE 2012)

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41.

Rohan calculated the area of the givenparallelogram by multiplying 10 and15. Find the formula to calculatethe area of a parallelogram forany base and height.height 10base 15

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area of parallelogram = 10×15 = 150

general formula = area of ||gm = b×h

42.

(27+hx) ffygwis2panzpw

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43.

27. In the given figure AB is a chord of a circle, with centre O, such that AB 16 cm and radius of circle is10 cm. Tangents at A and B intersect each other at P. Find the length of PA.

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44.

WILLICI(i) 250 paise to 3 152 TS.

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250 paisa/ 15*100= 25/150= 5/30= 1/6

$15=15×100=1500=250/1500=1/6

15=15x1001500=250/1500 1/6 3 it is write answer

45.

218-MATHEMATICSDo THESE1. Find the volume of cuboid if1-12 cm, b=10cm.and som

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Volume= lbh= 12*10*8= 960cm ^3

46.

UStiles are required? If a carpet is laid on the floor so that a space of I.5 m is left around the edges of floor, whatfraction of the floor is uncovered?t0. A room has a floor measuring 15 m by 8 m. It has to be covered with tiles of size 50 cm by 25 cm. How many

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Area of floor = length*breadth = 1500*800 = 1200000 cm^2Area of tile = 50*25 = 1250 cm^2

No. Of tiles required = 1200000/1250 = 960

47.

If the sides of a triangle are 9 m, 12 m and 15 m, then find its area, using Heron's formula.

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48.

20 In the figure,an equilateraltriangle EABsurmountsthe squareABCD. Findthe value ofx and y.

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Angle BED equals 120

when you draw fig in the basis of linear pair you get the answer

point to remember is that sum of angles in linear pair is 180

AD is a linear pair

BEC equals 60

E is the midpoint of AD

49.

In figure, find the sum of the angles EAB, ABC, BCD,CDE and DEA.

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The sum is 540 because this is a pentagon and according to this :(n-2)*180(5-2)*1803*180540n =no. of sides

50.

In figure, find the sum of the angles EAB, ABC, BCD,CDE and DE.

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