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.

Cost price is 972 and selling price is 810 what is loss and loss percentage​

Answer»

ANSWER:

The loss is 162 as 972 - 810 = 162

Loss percent = 16.6 %

Pls mark as BRAINLIEST and follow !!!!

2.

8. Minimize z=6x + 21y, subject to x + 2y > 3,x + 4y > 4, 3x + y > 3, x > 0, y > 0. question of 12th LPP​

Answer»

Answer:

just open MS word MAXIMIZE and minimize it XD

3.

What less than ten lakh​

Answer»

ANSWER:

The NUMBERS which are below TEN LAKHS RANGE from 9,99,999-0

4.

If a=3-2√2, find a ²-1/a^2​

Answer»

Answer:

34

Step-by-step EXPLANATION:

Given-----> a = 3 - 2√2

To find----> a² - 1 / a²

Solution-----> ATQ,

a = 3 - 2√2

1 / a = 1 / ( 3 - 2√2 )

Multiplying by ( 3 + 2√2 ) in NUMERATOR and denominator we get,

= ( 3 + 2√2 ) / ( 3 - 2√2 ) ( 3 + 2√2 )

We know that, a² - b² = ( a + b ) ( a - b ) , we get,

= ( 3 + 2√2 ) / { ( 3 )² - ( 2√2 )² }

= ( 3 + 2√2 ) / ( 9 - 8 )

= ( 3 + 2√2 ) / 1

=> 1/a = ( 3 + 2√2 )

Now , a = ( 3 - 2√2 )

Squaring both sides , we get,

=> a² = ( 3 - 2√2 )²

We know that,

( a - b )² = a² + b² - 2ab , applying it we get,

= ( 3 )² + ( 2√2 )² - 2 ( 3 ) ( 2√2 )

= 9 + 8 - 12√2

=> a² = 17 - 12√2

Now, 1 / a = 3 - 2√2

Sqaring both sides we get,

=> 1 / a² = ( 3 + 2√2 )²

We know that ,

( a + b )² = a² + b² + 2ab , we get,

= ( 3 )² + ( 2√2 )² + 2 ( 3 ) ( 2√2 )

= 9 + 8 + 12√2

=> 1 / a² = 17 + 12√2

Now,

a² + 1 / a² = ( 17 - 12√2 ) + ( 17 + 12√2 )

= 34

5.

Which of the following is not a quadratic equationa:3x²-5x+0b:x+1/x=1c:x²-9x=0d:x³-2x-√5=0​

Answer»

ANSWER:

D

Step-by-step EXPLANATION:

The equation should have the degree 2

If you have any DOUBT, just follow me and ask it PERSONALLY, I will give you a detailed explanation

No need to SAY thanks. Just rate it 5

6.

(-9)+(+4)+(-6)+(+3) solve this​

Answer»

Answer:

(-9)+(+4)+(-6)+(+3)

(-9)+(+4)+(-6)+(+3)= (-5)+(-3)

(-9)+(+4)+(-6)+(+3)= (-5)+(-3)= (-8) ans.

Hope it will HELP you

7.

8. Minimize z=6x + 21y, subject to x + 2y > 3x + 4y > 4, 3x + y > 3, x>0, y > 0.​

Answer»

ANSWER:

Balch Blah Blah

Step-by-step EXPLANATION:

Blah SORRY....I dont I know..

8.

Can the experiment probability of an event be greater than one??

Answer»

Answer:

No the value can never be GREATER than 1. If theprobability is 1 than it MEANS that an EVENT is a SURE event. The PROBABILITY of an event can be between 0 and 1. of favourable outcomes cannever be greater than the total outcomes justifying that the probability can never begreater than 1.

9.

Side of square whose diagonal is 10 cm​

Answer»

Answer:

5√2

Step-by-step EXPLANATION:

LET SIDE be x

acc. to PYTHAGORAS theorem

x^2+ x^2 =10^2

2x^2=100

x^2=50

x=√50

x=5√2

10.

If

Answer»

Step-by-step explanation:

In triangle ABC ,

Cos A = opposite side / hypo.

= AC / AB -1

Cos B = adjacent side / hypo.

= BC / AB -2

We gave cos A = cos B

Thus by 1 and 2,

AC / AB = BC / AB

Thus

AC . AB = BC . AB

AC = BC

thus AC and BC are TWO sides of triangle ABC

Thus ANGLE A = angle B

( ANGLES opposite to equal sides are equal )

This is the answer .

HOPE it helps u .....

Please mark me the BRAINLIEST

11.

Subtract the sum of 6a - 6c + 3b and 7c - 4b + 13a from the sum of 2a - 7 + 4b and 6a - 4c - 4bPlz answer ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️I will mark brainliest

Answer»

HOPE this will HELP you MATE!!!!!!

12.

Sharda bought a table and a fan together for rs 5000 after some time he sold the table at the gain of 25 percentage and the fan at a gain of 20 percentage thus he gained 23 percentage on the whole find the cost of fan

Answer»

Answer:₹2000

Step-by-step EXPLANATION:

LET the CP of FAN be ₹x and table be ₹(5000-x)

Total Sp=123% of 5000

=123*5000/100

=123*50

=₹6150

A.T.Q

120% of x+125% of (5000-x)=6150

120*x/100+125*(5000-x)/100=6150

120x+625000-125x=6150*100

-5x+625000=615000

5x=625000-615000

5x=10000

x=10000/5

x=₹2000

13.

All mathematics formula for class 8​

Answer»

Answer:

check it on GOOGLE ALSO you can also REFER to RD Sharma BOOK

14.

E) Срд 4 ) vto р/ч) (Prov avtruploa)​

Answer»

Step-by-step EXPLANATION:

which LANGUAGE is this??? CANT understnd brohh

15.

Write the following set in tabular formA=[×/× is even number 2

Answer»

ANSWER:

ANSWERS

Step-by-step EXPLANATION:

A = {4,6,8,10,12,14}

B = {23,29,31}

C = {15}

16.

draw any line segment PQ take any point R not on it through our draw a perpendicular to PQ use ruler and set Square​

Answer»

ANSWER:

I HOPE it's HELP you....................

17.

if x is an integer & y = -4x+17,what is the least value of x for which y is less than 1? answer is 5. but I don,t know how?​

Answer»

ANSWER:

MAY be the GIVEN QUESTION is wrong

Step-by-step EXPLANATION:

18.

3,3,3,3....is AP or not​

Answer»

ANSWER:

yes

Step-by-step EXPLANATION:

bcuz the COMMON DIFFERENCE is same

i. e.0

19.

(iii) Anagha is 15 years older than Kavya. Tenyears ago, Anagha was four times Kavya'sage. What are their ages now?​

Answer»

ANSWER:

Step-by-step EXPLANATION:

Answer

20.

the area of a rectangular piece of cardboard is 36 sq.cm and its length is 9cm. fid the width of the cardboard

Answer»

ANSWER:

Step-by-step EXPLANATION:

Area=36cm

L=9cm

Area=l×b

36cm=9cm×x

X=36cm/9cm

X=4cm

X=breadth

21.

In a class of 30 students 15students are of the height 124 cm and under 15 students of the height of 120 cm find the average height of the student​

Answer»

ANSWER:

the AVERAGE HEIGHT of the stundent is124cm

22.

- 3 s=4 then showthat Length of altitude fromA to B C is 24.​

Answer»

SEE here Okkkkkkkkkkkkkkkkkkk

23.

Find 70% in 500 marks​

Answer»

ANSWER:

=70/100×500

= 70×5

=350

24.

If alpha and beta are the roots of quadratic equations 3xsquare +kx+8=0 and alpha and beta =2/3then find the value of k​

Answer»

Answer:

Step-by-step EXPLANATION: as there roots are same THEREFORE D=0

A= 3 , B= k ,c= 8

D= b square -4ac

0= (k )square-4(3)(8)

0=(k) square - 96

Under root 96 = k

25.

6m+2÷m^2=7 first day m=?​

Answer»

ANSWER:

Answer is 1.2

STEP by step EXPLANATION is GIVEN in the pic.

Step by step explanation is given in the pic.Hope it HELPS..

26.

Plzzz someone solve this question ​

Answer»

Answer:1. 24

Step-by-step explanation:1. [1/4]^-2-3(8)^2/3*4^0+[9/16]^-1/2

=16-64*1+72

=16-64+72

=-48+72

=24

27.

Basic Mathematicsxample 2. If(x, y) is a point on the line joining the points (1, -3), (-4, 2), show that x + y + 2 =0.​

Answer»

X+y+2=0

PUTTING the VALUES x=1 y=-3

1+(-3)+2=3+(-3)=0

putting values x=-4. y=2

-4+(2)+2=-4+4=0

hence proved

hope this will HELP you mate!!!!

28.

A man whose income is rupees 576 a year cleanse rupees 432a year what percentage of his income does he save​

Answer»

Answer:

144 is the rezt of MONEY and 25%is his SAVINGS.....

29.

Add the following intergers. 8and-2​

Answer»

Step-by-step explanation:

8+(-2)

=8-2

=6

Hope it HELP

30.

Find out 25 % of 720 ​

Answer»

Step-by-step explanation:

25/100 *720

36*5

180.

...........

31.

ES18. Find the value of √25√25√25...​

Answer»

SORRY I am not INTERESTED in MATHS

32.

Please help me please please

Answer»

ANSWER:

in what I will HELP you

33.

What is the syllabus for Aakash Sparrk exam for class VII-VIII?​

Answer»

Answer:

According to the Aakash Sparrk, the exam duration is 1 hour  and total NUMBER of question is 45.

The subjects are,Physics, Chemistry, Biology  and MATHS.  In all 45 question number of question of is physics is 10, chemistry is 10, Biology is 10 and Maths is 15. Each question will be 1 marks.

Eligibility: Students Moving From: Class VII to VIII/ VIII to IX/ IX to X

Examination FEE:  Rs  200/- (Including GST)

Exam DATE:        05th April 2020 (Sunday)

Exam Timing:         \left \{ { Morning:\,11:00 \,AM \,to \,12:00 \,PM } \atop {Afternoon:\,  03:00\, PM\, to\, 04:00 \,PM}} \right. \\

Result Date:          08th April 2020 (Wednesday)

#Learn More:

brainly.in/question/9130216

brainly.in/question/9008227

34.

5 kg of in Rupees 91.53 what will be the cost of ATP of me what quantity of purchase in Rupees 183​

Answer»

ANSWER:

the answer is 10 KILO GRAM

35.

The sum of the circumference of a circle and the perimeter of the rectangle is 480cm. the area of the rectangle is 168cm². if the ratio of the radius of the circle to the breadth of the rectangle is 19:2, find the radius of the circle and the length of the rectangle.​

Answer»

Step-by-step EXPLANATION:

LET the RADIUS of circle be 19x and breadth of rect be 2x.

perimeter of rect=2 (l+b),circumference of circle =2×22/7×19x

168=2 (l+2x)+44/7×19x

84=l+2x+22/7×19x

Now solve for X

36.

if alpha and beta are the roots of quadratic equations 3xsquare +kx+8=0 and alpha/beta=2/3then find the value of k​

Answer»

Step-by-step EXPLANATION:

GIVEN,

ALPHA/beta = 2/3.

so, alpha= 2/3 beta.

Now,

alpha + beta = -k/3(a/b)

and, alpha× beta = 8/3(c/a)

PUT the value of alpha in EQUATION 2.

you will get the value of beta.

then you will get the value of alpha.

I hope this helps

37.

Hlw guys..! Ans this attachment...... ​

Answer»

Solution----->

1) First we FIND value of AB by MULTIPLYING A and B First we take first row of A and take first column of B and multiplying first term by first term and second term by second term and putting positive sign between them by this we get first term or AB of AB

2) Then we multiply first row of A by second column of of B by same PROCESS we get AB of AB

3) Then we multiply second row of A to first and second column one by one to get AB and AB

4) Now I is identity matrix of 2×2 order , we calculate 3I

5) Now we easily calculate AB - 3I , by subtracting corresponing elements , and get the answers

38.

Find the ratio of 36 months to 5 yearsPlz answerI will mark brainliest ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️

Answer»

Answer:

The required ratio is 3 : 5.

Step-by-step explanation:

In a YEAR there are 12 MONTHS.

In 5 years there will be, 5 × 12 = 60 months.

Compute the ration of 36 months and 60 months as FOLLOWS:

\frac{36\ months}{5\ years}=\frac{36}{60}=\frac{3}{5}

THUS, the required ratio is 3 : 5.

39.

15 metre deep circular well is 4. 2 find the cost of plastering its inner curved surface area at the rate of 40 per metre square​

Answer»

Answer:

16200 RUPEES

Step-by-step EXPLANATION:

h=15m

r=4.2m

csa of CYLINDER =2pirh

2*3.14*4.2*15=405

405*40=16200

40.

Much money on my5) The marks out of 100 obtained by students in the methematics examination are given. Find themean of the marks09.100.95, 100, 100,80,00​

Answer»

ANSWER:

MEAN= SUM of all data÷ NUMBER of all data

mean= 9+100+95+100+80+00÷7 =384÷7=54.85

41.

Relationship between 3sides ofright angle triangle​

Answer»

Answer:

HYPOTENUSE ^2 = 1st side^2+ 2nd side^2

please Mark as BRAINLIEST ✨✨

42.

ORThe total surface area of a solid composed of a conewith hemispherical base is 361.1 cm². (II = 3.14) Thedimension are shown in figure. Find the total height ofthe soldi. Ans with diagram ​

Answer»

Answer:

If a solid is composed of a cone with a hemispherical base WHOSE area is 361.1 cm^2 and slant height is 13 cm then the total height of the solid is 17 cm.

Step-by-step EXPLANATION:

Required FORMULAS:

Curved Surface area of the Cone = πrl

Curved Surface area of the hemisphere = 2πr²  

It is given that,

A solid is in the shape of a cone with hemispherical base

The total surface area of the solid = 361.1 cm²

The slant height of the cone, l = 13 cm

Step 1:

Let the radius of the hemispherical base be denoted as “r” cm.

Now,

The curved surface area of the CONICAL part of the solid = πrl = 3.14 * r * 13 = [40.82 r] cm²

And,

The curved surface area of the hemisphere part of the solid = 2πr² = 2 * 3.14 * r² = [6.28r²] cm².

We KNOW that,

The total surface area of the solid = [C.S.A of the conical part] + [C.S.A of the hemisphere part]

⇒ 361.1 = [40.82 r] + [6.28r²]  

⇒ 6.28r² + 40.82r – 361.1 = 0

⇒ r² + 6.5r – 57.5 = 0

⇒ r² + 11.5r – 5r – 57.5 = 0

⇒ r(r+11.5) – 5(r+11.5) = 0

⇒ (r+11.5)(r-5) = 0

⇒ r = 5 cm …… [neglecting the negative value]

Step 2:

Let the height of the cone be denoted as “h” cm.

We know the formula of the slant height of a cone is given by,

l² = h² + r²  

Substituting the value of l and r in the formula, we get

h = √[13² – 5²]

⇒ h = √[144]  

⇒ h = 12 cm

Thus,  

The total height of the solid is given by,

= [height of the cone] + [radius of the hemisphere base]

= h + r

= 12 + 5

= 17 cm

43.

The lower part of a toy is right circular cylinderical and its upper partis conical. The diameter of its base is 8 cm and height of the cylindricalpart is 5 cm. If the total height of the toy is 8 cm, find the area of thecurved surface and its volume. (r = 3.14)​

Answer»

CURVED SURFACE AREA of TOY is 188.4 sq.cm

Volume of toy is 301.44 cm3

Hope it HELPS you

44.

Rul upoints A(5, 5, b), B(-1, 3, 2) and C(-4,2,- 2) are collinear, find thevalue of b​

Answer»

What should we do my DEAR FRIEND....

45.

I'll mark the best answer brainliest ​

Answer»

Answer:

\boxed{\text{Answer: x = -2}}

EXPLANATION:

\boxed{\text{Given: } \frac{7^{10}}{7^8} = \frac{1}{7}^x} \\\\\\\text{According to division rule and reciprocal rule of powers:}\\\\7^{10-8} = 7^{-x}\\\\7^2 = 7^{-x}\\\\\text{Now, bases are equal, hence, equating powers:}\\\\-x = 2\\\\\boxed{\text{Answer: x = -2}}

HOPE it HELPS! If it does, please MARK it BRAINLIEST! Thanks :D

46.

24 November 2018 is first Sunday, what is the date of 2 Sunday in 5002​

Answer»

ANSWER:

when this DATE COME I TELL you what is the DAY

47.

Explain this question please​

Answer»

ANSWER: 6 km

Step-by-step explanation:

Using the Pythagoras theorem .

(10)^2=(8)^2+(x)^2

100=64+(x)^2

36=(x)^2

x=6 km

48.

After 12 years ,I shall be 3 times as old as I was 4 year ago.Find my Present age.​

Answer»

ANSWER:

let PRESENT AGE be x

x+12=(x-4)3

x+12=3x-12

3x-x=12+12

2x=24

x=12

present age is 12

Hope it help

with REGARDS from IFRA..

49.

perimeter of a rhombus is 68 cm and its first diagonal is 16m find the other diagonal and the area of rhombus ​

Answer»

PLZZ MARK ME BRAINLIEST IF IT HELPED YOU

50.

76 cm20 cm16 cm48 cm​

Answer»

ANSWER:

what is the QUESTION you GIVE all the information but you don't WRITE the WHOLE question!