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InterviewSolution
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.
| 701. |
Prove that 8x can not end with digit O, for any natural no. n. |
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Answer» Yes 8*n will not end with zero because , the number will end with zero then it\'s factors should 2and5 We know 8n\xa0= (23)n\xa0= 23nIf 8n\xa0end with zero then 10 is factor of 8n.\xa08n\xa0= 23n\xa0=\xa0(5)(2)\xa05 is factor of 2, which is a contradictionSo, our assumption is wrong. Hence 8n\xa0cannot end with zero. |
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| 702. |
What is the maximum value of sin theeta???? |
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Answer» Nanq The sine function forms a wave that starts from the origin\tsin θ = 0 when θ = 0 ˚ , 180˚ , 360˚ .\tMaximum value of sin θ is 1 when θ = 90 ˚. Minimum value of sin θ is –1 when θ = 270 ˚.\xa0So, the range of values of sin θ is –1 ≤ sin θ ≤ 1. |
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| 703. |
Find x if (root 2x +9) + x = 13 |
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| 704. |
Can 35 be the term of the given sequence -34, -30, -26 |
| Answer» LetAn=35Given that,A=-34D=4 (since, [-30-(-34)=4])So,An=A+(n-1)D35=-34+(n-1)4 =-34+4n-4 =-38+4n => 4n-38=35 =>4n=35+38 =>n=73/4But here n is number of digits therefore 35 cannot be the number of this A.P | |
| 705. |
Find the discriminant of the following equation:(x+1)^2-x^2 |
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| 706. |
Cos1.cos2.cos3...cos180=0 . Prove |
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| 707. |
What is the maximum value of 1÷cos theeta?? Please tell:( |
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| 708. |
If angles A,B,C of a triangle ABC form an increasing AP, then sinB =??? |
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| 709. |
Y=x,y=0 and 2x+3y=30 |
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| 710. |
√4 + √3/2/√6+2/9 |
| Answer» 2.57577561282 | |
| 711. |
What is Gp |
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Answer» Geometric Progression Gross product GENERAL PRACTITONER, a doctor who provides general medicine treatment for the people who live in particular area |
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| 712. |
Root of 108 |
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Answer» 10.39 6√3 6root 3 |
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| 713. |
The system of eq 2x+ 3y -7=0 ,6c+5y -11 |
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| 714. |
The system of eq 2x+3y-7=0,6x+5y-11 has |
| Answer» Consistent | |
| 715. |
What is sin30=? |
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Answer» 1/2 Sin30=1/2 1/2 Testing app? |
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| 716. |
Show that: tan 48 tan 23 tan 67=1 |
| Answer» your question is wrong OK. ?tan48.tan23.tan42.tan67=1RHS=tan48.tan42.tan23.tan67.=tan48.tan(90-48).tan23.tan(90-23).=tan48.cot48.tan23.cot23.=tan48.1/tan48.tan23.1/tan23=1I hope this really help you ??? | |
| 717. |
64x - 45y = 289 and 45x - 64y = 365 , solve this linear equation in two variables . |
| Answer» 64x-45y=289x=289+45y/64......let this be equation 1Similarly in the second equation45x-64y=365x=365+64y/45.......let this be equation 2From eq 1&2 289+45y/64=365+64y/45Now by cross multiplication45(289+45y)=64(365+64y)Simplifying......13005+2025y=23360 +4096yTaking LHS to RHS .....we get 2071y=-10355y=-10355/2071y=-5By substituting y in eq 1.....64x -45 × (-5)=28964x +225=28964x=289-22564x=64Thefore x=1.......hence x=1 y= -5 | |
| 718. |
Optional exercise in Class 10 math board exam is come or not |
| Answer» Yes some questions are come from that concept not this questions come ok | |
| 719. |
Is completing the square method has been removed from cbse board |
| Answer» yes | |
| 720. |
Using quadratic formula solve ab^2x(a/dx+2c/b)+c^2d=0 |
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| 721. |
Tan 26° /cot 64 ° = ?? |
| Answer» tan 26°/cot 64° = tan (90° - 36°)/cot 64° = cot 64°/cot 64°= 1 | |
| 722. |
The end term of an ap cannot be 3 and square + 5 justify your answer |
| Answer» The nth term of an AP can\'t\xa0be n2+1. Difference between first and second\xa0term\xa0=\xa05\xa0- 2 =\xa03. Their common difference is not equal. In\xa0A.P,common difference should not be equal, so this series\xa0can\'t\xa0be\xa0A.P. | |
| 723. |
(a+b)*3 |
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Answer» a*3+b*3+3ab(a+b)=a*3+3a*2b+3ab*2+b*3 a3+b3+3ab(a+b) |
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| 724. |
What is non terminating recurring |
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Answer» Eg:17/24 where q is expressed as (2^3 X 3)Hope it helps☺️ The no.which can be written in p/q form where the factors of q cannot be written in (2^n or 5^m or both form) |
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| 725. |
Very very very bad app |
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Answer» App is good but does not solve the query of students Why Why ? Tanisha may I know Why ?? Miss Tanisha... Bad |
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| 726. |
2×2÷3×1+190÷7×6 |
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| 727. |
2y+3x=13 |
| Answer» Simplifying2y + -3x = 13Reorder the terms:-3x + 2y = 13Solving-3x + 2y = 13Solving for variable \'x\'.Move all terms containing x to the left, all other terms to the right.Add \'-2y\' to each side of the equation.-3x + 2y + -2y = 13 + -2yCombine like terms: 2y + -2y = 0-3x + 0 = 13 + -2y-3x = 13 + -2yDivide each side by \'-3\'.x = -4.333333333 + 0.6666666667ySimplifyingx = -4.333333333 + 0.6666666667y | |
| 728. |
(x-5)(x-6)=25/24^2. |
| Answer» are the two roots of the given equation. | |
| 729. |
Ghgt |
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| 730. |
there are 100 student in a school out of which 58 are boys find the probability of getting girls |
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Answer» 42/100 = 0.42 No. Of total students = 100No. Of boys = 58 So, No. Of girls = 42/100 42/100 Probability= 42/1000 |
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| 731. |
why b^2 – 4ac is called the discriminant of quadratic equation |
| Answer» The number of roots of a\xa0polynomial equation\xa0is equal to its degree. Hence, a quadratic equation has 2 roots. Let α and β be the roots of the general form of the quadratic equation :ax2\xa0+ bx + c = 0. We can write:α = (-b-√b2-4ac)/2a and β = (-b+√b2-4ac)/2aHere a, b, and c are real and rational. Hence, the nature of the roots α and β of equation ax2\xa0+ bx + c = 0 depends on the quantity or expression (b2\xa0– 4ac) under the square root sign. We say this because the root of a negative number can’t be any real number. Say x2\xa0= -1 is a quadratic equation. There is no\xa0real number\xa0whose square is negative. Therefore for this equation, there are no real number solutions.Hence, the expression (b2\xa0– 4ac) is called the discriminant of the quadratic equation ax2\xa0+ bx + c = 0. Its value determines the nature of roots as we shall see. Depending on the values of the discriminant, we shall see some cases about the nature of roots of different quadratic equations | |
| 732. |
If i want to score full marks in exams which book i should prefer |
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Answer» Rs agrawal, RD sharma, prachi for science, full mark for English RD. SHARMA OR RS.AGARWAL FOR MATHSFOR SCIENCE (LAKMIR SINGH AND MANJIT KAUR) Rd sharma for mathsAll in one for social sciencePradeep for scienceGolden for Hindi All in one for english RD sharma and oswal.. Oswal and examidea |
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| 733. |
Sin a= 2/3 |
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| 734. |
Sin =2/3 |
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| 735. |
Form the quadratic polynomial whose zeroes are 2+√6,2-√6 |
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Answer» i guess it should be (x^2-4x-2)pl.tell me if its wrong x^2 -4x +24 |
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| 736. |
If H.C.F(384, 26)=384m+26n find m and n. Or prove that √3+√7 is irrational |
| Answer» Using Euclid\'s division lemmahence HCF is 2. Now starts from second last ewuationso m=4n= -59 | |
| 737. |
H.C.F(306,630)=9 then the L.C.M(306,630) is |
| Answer» LCM ×\xa0HCF = Product of the NumbersLCM\xa0× 9 = 306\xa0× 630LCM = (306\xa0× 630)/9LCM = 306\xa0× 70LCM= 21420 | |
| 738. |
If L.C.M (a, b)=108 then H.C.F(a, b) is |
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| 739. |
What is cooprime number |
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Answer» Co-prime number is a set of numbers or integers which have only 1 as their common factor i.e. their\xa0highest common factor\xa0(HCF) will be 1. Co-prime numbers are also known as relatively prime or mutually prime numbers. It is important that there should be two numbers in order to form co-primes.Example 1:\xa021 and 22For 21 and 22:\tThe factors of 21 are 1, 3, 7 and 21.\tThe factors of 22 are 1, 2, 11 and 22.Here 21 and 22 have only one common factor that is 1. Hence, their HCF is 1 and are co-prime. Two or more numbers having only 1 as their common factor |
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| 740. |
What is airthmatic |
| Answer» Arithmetic is a branch of mathematics that consists of the study of numbers, especially the properties of the traditional operations on them—addition, subtraction, multiplication, division, exponentiation and extraction of roots. | |
| 741. |
What is automatic |
| Answer» Which happens by itself, with negligible human or anyone else\'s involvement | |
| 742. |
Use Euclid Division algorithm to find the hcf |
| Answer» Let us state Euclid\'s division algorithm clearly.To obtain the HCF of two positive integers, say c and d, with c>d, follow the steps below:Step 1:-Aplly Euclid division lemma, to c and d ,with no. , q and r. such that c=dq+r,0 | |
| 743. |
If you in class 10 you gets 99percent marks which math book is best consider for us |
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Answer» Ncert and RD sharma. NCERT then RD Sharma Use Euclid divisions algorithm to find the h c f All in one by arihantMaths book Ncert |
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| 744. |
Sinthitha - cos = 7/13 then find sin + coa |
| Answer» Given :\xa0\xa0To find :\xa0\xa0Consider : \xa0Squaring both sides , we get\xa0 [Since ,\xa0] (1)\xa0\xa0Consider\xa0\xa0From (1),i.e.\xa0\xa0Taking square root on both sides , we get.\xa0\xa0Hence, the value of\xa0 | |
| 745. |
Find the area of triangle if points (2,-2) (-3,8)(-1,4) |
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| 746. |
Musa answers sheet chaia class 10 maths last pages |
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| 747. |
If Gcf (25,15) =4× +1 then ×=_ |
| Answer» 25 = 5\xa0× 515 = 5\xa0× 3G.C.F (25,15) = 5G.C.F\xa0(25,15)= 4X+14x + 1 = 54x = 5 - 1\xa04x = 4x = 4/4x = 1 | |
| 748. |
A quadratic polynomial whose zeroes are 7 and 5 is |
| Answer» Given\xa0:\xa0\tZeroes of polynomial = 7 and 5\xa0To Find\xa0:\xa0\tA quadratic polynomial\xa0Solution\xa0:\xa0⇒ x = 7 and x = 5\xa0So,\xa0⇒ ( x - 7 ) ( x - 5 )\xa0⇒ x² - 5x - 7x + 35\xa0⇒ x² - 12x + 35\xa0x² - 12x + 35 is the quadratic polynomial whose zeroes are 7 and 5 | |
| 749. |
How many irrational numbers lie between 2&3 |
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Answer» Infinite irrational numbers lie between 2&3. Infinite An\xa0Irrational Number\xa0is a real number\xa0that cannot be written as a simple fraction .\xa0Example: π (Pi) is a famous irrational number. We cannot write down a simple fraction that equals Pi. The popular approximation of 22/7 = 3.1428571428571 ... is close but not accurate. Another clue is that the\xa0decimal goes on forever without repeating.Irrational numbers between 2 and 3Square of 2 is 4Square of 3 is 9Square root of 5,6,7,8\xa0will be\xa0irrational number\xa0between 2 and 3 since these numbers\xa0are not perfect square\xa0. |
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| 750. |
What are prime and co-prime numbers |
| Answer» Prime Number Which is Divisible By 1 And Number ItselfExample:2,3,5,7,11, Etc…..In Prime We Should Have Only One NumberThat’s Why it is Called PrimeCo Prime Number Which is Having A Common Factor Among ThemExample:21,2221-Factors: 1,3,7,2122 -Factors: 1,2,11,22In Co -Prime We Should Have Two NumbersIn This We Have Only 1 Common FactorThat’s Why it is Called Co -Prime | |