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.

Find product of (-8)*(-5)*(-4).​

Answer»

ANSWER:

-160 is the answer

Step-by-step explanation:

40×(-4)=-160

2.

In testing a hypothesis about two population means, it the t distribution is used, which of the following assumptions is required?The sample sizes are equalBoth populations are normally distributedThe standard deviations are not the sameBoth population means are the same

Answer»

Step-by-step EXPLANATION:

We use this hypothesis test when the data meets the FOLLOWING conditions. The two random samples are independent. The variable is NORMALLY distributed in both populations. If this variable is not KNOWN, samples of more than 30 will have a difference in sample means that can be modeled ADEQUATELY by the t-distribution.

3.

How many millions make 3 crores​

Answer»

Answer:

30 MILLION are there in 3 CRORES

Step-by-step explanation:

PLS MAKE me brainliest

4.

7. Study the pattern 91 x 11 x 1 = 1001, 91 x 11 x 2 = 2002,91 x 11 x 3 = 3003 . Write next seven steps . Check, whether the result is correct.8. How would we multiply the numbers 13680347, 35702369 and 25692353 with 9 mentally ? what is the pattern that emerges. ​

Answer»

ANSWER:

Step-by-step EXPLANATION:

5.

The Normal curve is _________ about Z=0uniformAsymmetricnoneSymmetric

Answer»

ANSWER:

Uniform

hope it helps

please MARK it as BRAINLIEST answer.

6.

Vatsal added 2305 to a number and then added 1653 again. He got the answer as 10000. Find the number he started with​

Answer»

Answer:

6042

Step-by-step EXPLANATION: LET the no be X,

so,x+2305+1653=10000

x+3958=10000,

THEREFORE, x=10000-3958=6042

mark BRAINLIST

7.

Find the prime factor of 125 175 and 650

Answer»

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\huge\orange{\mid{\underline{\overline{\textbf{<klux>LIKE</klux>\:MATHS}}}\mid}}

\large\red{\mid{\underline{\overline{\textbf{YOUR\:<klux>ANSWER</klux>}}}\mid}}

ANSWER IS IN ATTACHMENT

PLZ LIKE THE ANSWER AND MARK IT AS BRAINLIEST.

ANSWER BY MANAS817

8.

A statement made about a population for testing purpose is called?StatisticLevel of SignificanceTest of StatisticHypothesis

Answer»

ANSWER:

HYPOTHESIS is the answer

9.

2х2х3х3х7ЗX 3X 3x 3X 7​

Answer»

here is your answer:252and567

10.

-9) दो अंकों की एक संख्या अपने अंकों के गुणनफल के दुगुने से 8 कम है। यदि इकाई के अंकसे दहाई का अंक 1 अधिक हो, तो वह कौन-सी संख्या है?​

Answer»

Answer:

89

Step-by-step EXPLANATION:

-----------------------+-

11.

If ∆ABC ~ ∆DEF and AB = 5cm, ar(∆ABC) = 20cm2 , ar(∆DEF) = 45cm2 then DE = (a) 4 5 (b) 7.5cm (c) 8.5cm (d) 7.2cm

Answer»

Step-by-step EXPLANATION:

by USING FORMULAS we can FIND it.....................

12.

Pls solve it fast.................​

Answer»

Answer:

1) Double BAR Graph

2) Raw Data

3) Frequency

4) Histograms

5) pie chart

HOPE IT HELPS YOU

PLEASE MARK ME AS THE BRAINLIEST

13.

Analysis of variance is a statistical method of comparing the _____ of several populationsmeansproportionsvariancesstandard deviations

Answer»

Answer:

ANALYSIS of Variance (ANOVA) is a statistical method used to test differences between two or more means. It may SEEM odd that the technique is called "Analysis of Variance" RATHER than "Analysis of Means." As you will see, the name is appropriate because inferences about means are MADE by ANALYZING variance.

14.

Find the smallest number which when divided by 11 is exactly divisible by 15 20 and 54​

Answer»

Step-by-step EXPLANATION:

MARK as BRAINLIST my FRIEND.

15.

Type 1 error occurs whenReject H0 if it is TrueAccept H0 if it is FalseAccept H0 if it is True Reject H0 if it is Fals

Answer»

Answer:

ACCEPT HO if it is False

I HOPE it HELPS you

plz mark me as brainliest and follow......

16.

Please solve the question in attachment....​

Answer»

ANSWER:

SORRY I don't KNOW this answer sorry

17.

Chi-square distribution_____ ContinuousMultimodalSymmetrical Uniform

Answer»

ANSWER:

UNIFORM

I HOPE it HELPS you.......

18.

The coach of cricket team buys 7 bats and 6 balls for rupees 3,800.later she buys 3 bats and 5 balls for rupees 1750 . find the cost of each ball and each ball. ​

Answer»

Step-by-step explanation:

Let cost of each bat = Rs x

Cost of each ball = Rs y

Given that coach of a CRICKET team buys 7 BATS and 6 balls for Rs 3800.

So that 7x + 6y = 3800

6y = 3800 – 7x

Divide by 6 we get

y = (3800 – 7x) /6 … (1)

Given that she buys 3 bats and 5 balls for Rs 1750.so that

3x + 5y = 1750

Plug the value of y

3x + 5 ((3800 – 7x) /6) = 1750

Multiply by 6 we get

18 x + 19000 – 35 x = 10500

-17X =10500 - 19000

-17x = -8500

x = - 8500 / - 17

x = 500

Plug this value in equation first we get

y = ( 3800 – 7 * 500) / 6

y = 300/6

y = 50

Hence cost of each bat = Rs 500 and cost of each balls is Rs 50

19.

Necessary Conditions required to apply the z-test to test the difference between two population means isall the above Standard deviation of the population should be knowneach population has normal distributionThe samples must be randomly selected

Answer»

HEY MATE HERE UR ANSWER....

What is z-test and t-test ?

A Z-test is any statistical test for which the distribution of the test statistic under the null hypothesis can be approximated by a normal distribution. Z-test tests the mean of a distribution in which we already know the POPULATION variance σ2 . Because of the central LIMIT theorem, many test statistics are approximately normally DISTRIBUTED for large samples. For each significance level in the confidence interval, the Z-test has a single critical value (for example, 1.96 for 5% two tailed) which makes it more convenient than the Student's t-test which has separate and different critical values for each sample size (for different sample size, it would have different degree of freedom, which may determine the value of the critical values). Therefore, many statistical tests can be conveniently performed as approximate Z-tests if the sample size is large or the population variance is KNOWN. If the population variance is unknown (and therefore has to be estimated from the sample itself) and the sample size is not large (n < 30), the Student's t-test may be more appropriate.

________________________________

What conditions are necessary in order to use the z-test to test the difference between two population means?

The samples must be randomly SELECTED, each population has a normal distribution with a known standard deviation, the samples must be independent. All population means are equal.

Hope it helps u... Please follow me, I will be thankful to u...

Please mark as brainliest...

20.

Weight ( in kilogram) of eight students is as follows- 30,32,33,38,37,41,45,40 find the average weight of the students​

Answer»

ANSWER: 30+32+33+38+37+41+45+40=296

              296 DIVIDED 5 = 59.2

21.

Show that every positive odd integer is of form 2q + 1

Answer»

Answer:

let 'a' be any positive INTEGER and b=2

By euclid's division algorithm

a=bq+r       0≤r

a=2q+r       0≤r<2

(i.e) r =0,1

r=0 , a=2q+0=> a=2q

r=1, a=2q+1

if a is the FORM of 2m then 'a' is an even integer and positive odd integer is of the form 2m+1

22.

The hight of the first step is 10 cm and the hight of the each step is 17.5 cmhow high from the ground would be some one climbing up after each step? ​

Answer»

Over the years, carpenters have determined that tread width times riser HEIGHT should EQUAL somewhere between 72 to 75 inches. On a main stair, the maximum RISE should be no more than 8 1/4 inches and the minimum run should be no less than 9 inches.

23.

The test which measures how well the observed distribution of data fits with the distribution that is expected if the variables are independent isF-testt-testpaired t-test\chi ^{2}-test

Answer»
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24.

Factorize : a^12.y^4-a^4.y^12​

Answer»

this is the PROPER solution

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25.

Y3-7 y+ 6Factoriese​

Answer»

ANSWER:

\huge\boxed{\fcolorbox{blue}{purple}{5}}

Step-by-step EXPLANATION:

y3-7 y+ 6

y-4 y+6

y+y=6+4

2y=10

y=10/2

y=5

HOPE IT HELPS YOU

26.

The figure shows the position-timex t   graph of one dimensional motionof a body of mass 0.4 kg. Themagnitude of each impulse is1) 0.4 Ns 2) 0.8 Ns3) 1.6 Ns 4) 0.2 Ns

Answer»

ANSWER:

Step-by-step EXPLANATION:

In each IMPULSE, x varies from 0 to 2m and again from 2 m to 0 during the time

interval of 4s. We have,

Impulse = Change in momentum

m(V2 - v1 ) = 0.4 x 2 = 0.8 Ns

27.

Find the zeroes of t sq plus 25​

Answer»

Answer:

you will g

get imaginary ROOTS. LIKE ROOT of minus x.

28.

Find quadratic polynomial with sum of zeroes equal to 1/4 and product equal to 1/3​

Answer»

ANSWER:

x^2-1/4x+1/3

Step-by-step EXPLANATION:

U can simply it ALSO by TAKING LCM

29.

Whycoccondgets hardmed Grive reasons​

Answer»

Step-by-step EXPLANATION:

I THINK this must be wrong question

it should be coconut not 'coccond'

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30.

Study the following arrangement carefully and answer the question1 pointgiven below.B @ 2 $ G 6ACO %7 F# B KL 2 YTP 6 W35 UFV 9Three of the following four are alike in a certain way based on theirpositions in the above arrangement and so form a group. Which is the onethat does not belong to that group?

Answer»

ANSWER:

Which standered QUESTION is this PLEASE TELL me

31.

Is -1 the zero of polynomial 2x^4 +9x^3+11x^2+4x-6show the calculation plz ...ill mark as brainliest

Answer»

Answer:

-6

Step-by-step explanation:

p(-1)=2(-1)^4+9(-1)^3+11(-1)^2+4(-1)-6

= 2-9+11-4-6

= -6

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PLEASE FOLLOW ME UP

MARK THIS AS BRAINLIEST

32.

Show that 2−3√5 is an irrational number

Answer»

Step-by-step explanation:

LET X=2−3 √5

be a RATIONAL number.

3 √5 =2−x

√5 = 3

2−x

SINCE x is rational, 2-x is rational and hence

3

2−x is also rational number

⇒

√5

is a rational numbers, which is a contradiction.

Hence 2−3√5

must be an irrational number.

pls mark me as BRAINLIEST

33.

Find the value of k when the root of the quadratic equationx²+ k(4x+k-1)+ 2= 0 are real and equal.​

Answer»

Step-by-step EXPLANATION:

x2+k(4x+k-1)+2=0

now k-1=0

k=1

34.

Find the smallest number is​

Answer»

Answer:

1 : The SMALLEST natural number(i.e. positive INTEGER) is 1. 2 : The smallest whole number is 0. 3 : There is no smallest integer.

35.

The probability of committing type-II error is denoted by1-\beta1-\alpha\beta\alpha

Answer»

ANSWER:

B is the RIGHT answer 1alpja

36.

Factorise3x^2+11x+6​

Answer»

Step-by-step explanation: 3X^2 + 11x + 6

3x^2 + 9x + 2X + 6

3x(X + 3) + 2(x +3)

(3x + 2)(x + 3)

37.

solve the following equation and verify your answer. 0.5x-4/2.4x+6=-5/3​

Answer»

Answer:

quadratic equation

Step-by-step EXPLANATION:

as in above PICTURE U can SEE it

38.

The ( m - 3) ( m-7)= ?​

Answer»

ANSWER:

m^2-3m+21

Step-by-step EXPLANATION:

m-3*m then m-3*7

39.

Obtain all zeros of the polynomial f(x)=2x⁴+x³-14x²-19x-6. if two of its zero are -2and -1​

Answer»

ANSWER:

I HOPE this will HELP you THANK you....

40.

If a cone of radius 7cm and height 36m is cut from a cylinder of same dimensions then the volume of the remaining solid isplease please answer if u know only . dont copy from internet ( NO SPAM ❌)​

Answer»

HEY BUDDY

i have a DOUBT on the radius you have stated as it is in CM so i have in metres and cm

hope it helps you.mark it as a BRAINLIST

41.

XG-QuizG-Leam/Quiz/QuizStartPage2Q.No: 2, Marks : 11. Magnitude of maximum directional derivative of a scalar point function F(x,y,the given direction is0 10 FIO FOFIIVFI​

Answer»

ANSWER:

PLEASE MARK me the BRAINLIEST answer

42.

The point where the Null Hypothesis gets rejected is called asAcceptance ValueSignificant ValueCritical ValueRejection Value

Answer»

ANSWER:

CRITICAL Value

Ur answer is here.....!!!!!

PLZ MARK as BRAINLIEST....!!!!

43.

The marked price of a table is 1200, which is 20%above the cost price. It is sold at a discount of 10%on the marked price. Find the profit per cent.​

Answer»

Step-by-step EXPLANATION:

COST PRICE is 960

Price after DISCOUNT is 1080

Profit %=960/1080×100

=88.8%

44.

X2 chi-square test statistic is\sum \frac{(O_{i}+E_{i})^{2}}{E_{i}}\sum \frac{(O_{i}-E_{i})}{E_{i}}\sum \frac{(O_{i}-E_{i})^{2}}{E_{i}^{2}}\sum \frac{(O_{i}-E_{i})^{2}}{E_{i}}

Answer»

ANSWER:

SORRY I do no this answer

45.

State different kind of number system class 10 ch1 real numbers​

Answer»

Step-by-step explanation:

The set of real NUMBERS CONSIST of different categories, such as natural and whole numbers, rational and irrational numbers and integers. In the table given here, all these numbers are DEFINED with examples. CONTAIN all counting numbers which start from 1.

I hope my ans will help you PLEASE follow me and mark me Brainliest

46.

3.SUNITHA TAKES A LOAN OF 5000 RUPEES AT 12% RATE OF INTEREST.FIND THE INTEREST SHE HAS T5O PAY AT THE END OF ONE Year​

Answer»

Answer:

600

Step-by-step EXPLANATION:

12 \div 100 \times 5000

47.

A toy is in the shape of cone mounted on a hemisphere. The diameter of the base and the height of the cone are 8cm and 3cm respictevely. Determine the surface area of the toy. use(π=3.14​

Answer»

ANSWER:Total surface ARES of the toy= Surface area of the cone (πrl)+ surface area of hemisphere (2πr ^2) =π.3×5+2.π.3 ^2 =33π=33×3.14=103.62

.....Stay safe

48.

G-LeamxG-QuizX +CНz/QuizStartPage2aps x Book 1.xlsx - Micros...Q.No: 1, Marks : 1The divergence theorem for a surface consisting of a sphere is computed in which coordinate system?O CylindricalO CartesianO SphericalO Depends on the function​

Answer»

ANSWER:

WHATS this MAN PLS nhxjsjshjdhxbnxjzjzjj

49.

The value of \alpha is known asNone of the aboveThe level of significance The rejection levelThe accepted level

Answer»

HELLO MATE ,,,,,,,,

THE VALUE OF \ALPHA IS KNOWN AS THE LEVEL OF SIGNIFICANCE..

THANKYOU

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♥HOPE YOU ARE SATISFIED WITH THE ANSWER.♥

50.

The t test is applicable to samples for which nisn30

Answer»

Answer:

I think NONE

Step-by-step EXPLANATION:

FOLLOW me please