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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.
| 66051. |
Simplify:(iv)5x6×6xFind the valu |
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| 66052. |
less21. The sum of the scores of Virat and Rahul is 300. If Virat scored 40 runshan Rahul, find their individual scores. |
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Answer» V + R = 300 V = R - 40 R - 40 + R = 300 2R = 340 R = 340/2 R = 170 V = 300-170 V = 130 Like my answer if you find it useful! |
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| 66053. |
37. If x, y, z are real numbers satisfying the equation 25(9x2+y)+92-15 (5xyyz+3x) -0 then prove thatx, y, z are in AP. |
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| 66054. |
11. Rahul invested r40,000 and received simple interest at the rate of 8% pa. after 1 year. Find his gain or loss,if he had invested the same sum at same rate and for same time with the interest being compounded half-yearly. |
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| 66055. |
92. 48 का 25% - 20 का 40% =?(1) 6(2) 18(3) 16 । |
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Answer» 48*25/100= 1220*40/100= 812-8= 4 thanks 48*25÷100-20*40÷10048*1÷4-20*2÷512-8=4 |
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| 66056. |
400 mangoes were purchased at 125 per hundred and sold at a loss of 100. Find theS.P. of one dozen mangoes. |
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| 66057. |
Using laws of exponents, simplify and write the answer in exponential form:(G) 3 x 34 x 38(ii) 615 610(iv) 7 x72(vii) a x b4(x) 8'82(ii) a x a2(Vi) 25 x 55(ix) (20 +-25)x(v (52)5Vill |
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Answer» thanks sir |
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| 66058. |
The number of moles of oxygen in one litre ofair containing 21% oxygen by volume, understandard conditions, is(a) 0.0093 mol(c) 0.186 mol(b) 2.10 mol(d) 0.21 mol. |
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Answer» in 1L of air... 21% is oxygen so, volume of oxygen is 0.21L now in 1 mol ---- 22.4 l is there.. so, for 0.21 l , the no..of moles = 0.21/22.4 = 0.009375..moles option A. |
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| 66059. |
1000 apples are stored in 25 boxes. How many apples are contained in 92 such boxes? |
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| 66060. |
. Write the numerical coefficient of the terns.А.xyB. 9y |
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Answer» A. 1. B. 9. |
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| 66061. |
L Rahul invested40,000 and received simple interest at the rate of 8% pa after 1 year. Find his gan or loss,if he had invested the same sum at same rate and for same time with the interest being compounded haltyearly. |
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| 66062. |
1. Find the numerical valu8(i)8 9 |
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Answer» the numerical value must be mod of (9×7-8×8) which is equal to 1 |
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| 66063. |
Find the numerical coefficient and factors ofeach ferm for ihe expression 3xy? -7xV |
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Answer» 3xy² -7x²y coefficient of xy² → 3coefficient of x²y → -7 factors → xy(3y-7x) |
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| 66064. |
A boy was asked to write 25 Ă 92, but he wrote2592. What is the numerical difference betweenthe two? |
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Answer» 2^5*9^2=32*81=2592hence difference is zero |
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| 66065. |
3.4.Write the product form of (3x)" and 3x". Are they same?Write the coefficient of-(a) x in 2x (b) a in-ga (c) y in 4xy (d) b in - Babc(e) a in - a(g) x in 4xy(h) y in y0 a in- ab? () z in zyIdentify the following statements as constants or variables.(a) Number of mangoes in one dozen mangoes.(b) Number of centimetres in a metre.(c) Temperature in a day.(d) Degrees in a right angle.(e) Degrees in an acute angle.(1) Number of days in February.(g) Number of days in April.(h) Number of letters in the word MATHEMATICS.Write the numerical coefficient in-(a) 2x(b) 3yz(d) a6.(9)(e) - yz(0) - bc(h) xyz(1) 3par(1) - xabc |
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Answer» a) constantb)constantc) variabled) constante) variablef) variableg) constanth) constant constant, constant, variable, constant, variable, variable a) constant b) constant c)variable d) constant e) variable f) variable g) constant h) constant |
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| 66066. |
Find all zeroes of the polynomial (2x4-9x3 + 5x2 + 3x-1) if two of its zeroes are (2 +伺and (2-5) |
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Answer» Since 2+√3 and 2-√3 are the roots Therefore (x-2-√3) and (x-2+√3) will be factors of the given polynomial. (2x⁴ -9x³ +5x²+3x-1) = (x-2-√3)(x-2+√3) .g(x) Now simply dividing (2x⁴ -9x³ +5x²+3x-1) by (x-2-√3) (x-2+√3) = (x-2)² - 3 = x²–4x+1 (2x⁴ -9x³ +5x²+3x-1) / (x²–4x+1) =( 2x²-x-1) Therefore g(x)= 2x²-x-1 =( x-1) (2x+1). Therefore other two roots are 1, -1/2 . |
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| 66067. |
5. Write the numerical coefficient of(i) ab(ii) -6bc |
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| 66068. |
7. A boy was asked to write 2^5 x 9^2 but he wrote2592. The numerical difference between thetwo is |
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| 66069. |
"A sum is distributed among P, Q and R in sucha way that 2 times of P, 4 times of Q and 5times of R are equal to each other. If the sumof Q and R is Rs. 220 less than P then by howmuch twice of Q is more than R ? |
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| 66070. |
what percentage of total distance of 100km is 22km |
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Answer» 22/100*100=22%is the answer of the question 22/100*100=22%is the correct answer of the given question |
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| 66071. |
Convert 14.5 litre into decalitre |
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Answer» 1 litre = 0.1 deca litre 14.5 litre = 14.5*0.1= 1.45 deca litre |
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| 66072. |
numerical cofficent in 2x |
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Answer» 2 is conficent of 2x Numerical coefficient of 2x is 2 |
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| 66073. |
Write numerical coefficient of 3xSyz. |
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Answer» The numerical coefficient of 3x³yz is 3 |
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| 66074. |
numerical coefficient of x3 term 9x3 -7x2 |
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Answer» Numerical coefficient of x^3in term 9x^3 - 7x^2 is 9 |
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| 66075. |
Each numerical figure in data is called |
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Answer» Each numerical figure in data is called observation. |
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| 66076. |
(6), The ratio of a and b in the equation 6a²+5ab-^ 662 = 0 is :(a) 4:5 0 (b) 5:40 (d) 4:30 2:3 |
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Answer» option c is the correct answer of the given question The answer is a:b::2:3 6a^2+5ab-6b^2=6a^2+9ab'4ab-6b^2=3a(2a+3b)-2b(2a+3b)= (3a-2b)(2a+3b)=:; 3a/3b=2b/3b= a/b=2/3==b=3; a=2 |
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| 66077. |
7.Disprove that "a> bfor all a >b" by finding a suitable counter example. |
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Answer» For all negative integers a and b such that a > b its not true that a^2 > b^2 For ex:(1) for a = - 1, b = - 2a > ba^2 = 1, b^2 = 4So, a^2 < b^2 (2) for a = - 4, b = - 5a > ba^2 = 16, b^2 = 25So, a^2 < b^2 |
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| 66078. |
Only: both14. In a cricket match, = of the tickets werereserved and the remaining 3500 were sold atthe counter. How many seats were there in all? |
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| 66079. |
OrIn a potato race, a bucket is placed at the startingpoint, which is 5 m from the first potato, and theother potatoes are placed 3 m apart in a straightline. There are ten potatoes in lines. A competitorstarte from the bucket, picks up the nearest potato,runs back to pick up the next potato, runs to thebucket to drop it in, and she continues in the sameway until all the potatoes are in the bucket. Whatis the total distance the competitor has to run. 6 |
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| 66080. |
b) 18x2y3 - 21x3y2 + 30x4ySouc) P3-16p2n |
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Answer» a) 3x²y(6y² - 7xy + 10x²)b) p²(p-16n)Please hit the like button if this helped you |
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| 66081. |
16. A hall is 26 m. long and 10m. wide. It is to be paved with equal squaretiles. Find the least number of tiles which will exactly cover the floor. |
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| 66082. |
IlSolve the numerical problerResistors having resistances of 15 W, 20 W andthe effective resistance ir the circuit?10 W are connected in parallel. What is |
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| 66083. |
Subtract down:4 53 0 |
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Answer» 10 subtract down 4 5 -3 0 10 45- 30= 15 |
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| 66084. |
p3 10 gu around the pond, what is the15. Each side of a square park is 80 m. At each corner of the park there is a flower bed in the form of a quadrantof a circle of radius 14 m. Find the area of the remaining part of the park. |
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| 66085. |
Practice timea) Arbaz plans to tile his kitchen floor withogreen square tiles. Each side of the tile is 10cm. His kitchen is 220 cm in length and 180cm wide. How many tiles will he need? |
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| 66086. |
Practice timea) Arbaz plans to tile his kitchen floor with ogreen square tiles. Each side of the tile is 10cm. His kitchen is 220 cm in length and 180cm wide. How many tiles will he need? |
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| 66087. |
afe tan 1 3_4 9 तो ८०५ 9 का मान ज्ञातकि; e |
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| 66088. |
3. Througharectangularfieldofsidesg0mx60m.tworoadsafedonstructedwhichareparallelafe constructed wto the sides and cut each other at right angles through the centre of the field. If the width of theroads is 3 m, find the total area covered by the two roads.t four squares of side 10 cm |
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| 66089. |
7x+5y-9 and 3x-2y+4 subtract it |
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Answer» 7x +5y -9 - (3x-2y+4)7x + 5y -9 -3x +2y -44x +7y -13 |
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| 66090. |
of the total strength. How many guG. In a class of 36 students, the number of boys is!are there in the class? |
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| 66091. |
17 more than three times its price. Find the price ofFive times the price of a pen isthe pen.than the number of irls. If the total strength of |
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Answer» Let the price of the pen be xA/Q,5x = 3x+175x-3x = 172x = 17x = 17/2x =8.5Therefore the price of the pen is 8.5 rupees |
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| 66092. |
In a class, the number of boys are more than the number of girls by 12%of the total strength. Find the ratio of boys to girls.20.(A) 15 11 (B) 11 :14 (C) 14:11 (D) 8:11 |
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| 66093. |
4B. (BASED ON ELECTRIC POWER)Calculate the power of a source if it produces an energy of 750 joules in 30 seconds.Energy = 750 J |
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Answer» Power = Work/timePower = 750/30 = 25 watt |
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| 66094. |
practice TimeSubtract the numbers:c) 42) 5-.13 |
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Answer» 0,3,2 is the answer of 3 subtract the numbers |
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| 66095. |
-4,-3,-2,-1,0,+1,+2,+3,+4.... are known as |
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Answer» -4, -3, -2, -1, 0, +1, +2, +3, +4, are known as set of integers |
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| 66096. |
01ăOrd a |
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| 66097. |
6.From the sum of 3x-y11 and -y- 11, subtract 3x-y-11.(a)b) From the sum of 4 + 3x and 5 -4x + 2x, subtract the sum of 3x - 5x and-x2 +2x 5. |
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| 66098. |
SubtractSolve. |
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| 66099. |
c) In a school, there are 2,732 students in primary classes, 2,825 in middclasses and 2,790 in senior classes. Find the total strength of the school.E |
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| 66100. |
\left. \begin{array} { c } { \frac { 1 } { 3 x + + y } + \frac { 1 } { 3 x - 4 y } = \frac { 3 } { 4 } } \\ { \frac { 1 } { 2 ( 3 x + y ) } - \frac { 1 } { 2 ( 3 x - y ) } = - \frac { 1 } { 8 } } \end{array} \right. |
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