Recent questions tagged q7

Evaluate $[834794 + 235475] - [56 \times 7] + [3454 - 790]$

asked Oct 19, 2017 by priyanka.c

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For protecting a magnetic needle it should be placed :

asked Oct 8, 2017 by priyanka.c

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One end of string of length I is connected to a particle of mass 'nf and the other end is connected to a small peg on a smooth horizontal table. If the particle moves in circle with speed 'u', the net force on the particle (directed towards center) will be ([ represents the tension in the string)

asked Oct 7, 2017 by meena.p

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Write the value of expression in roman numeral <br> 286 + CLXIX =

asked Oct 2, 2017 by priyanka.c

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How much time will be taken to cover 20 m at a speed of 20 cm per second?

asked Sep 25, 2017 by priyanka.c

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Find the missing number in the following figure.

asked Sep 20, 2017 by priyanka.c

1 answer

There are 7 yellow balls, 4 green balls, 3 red balls and 6 blue balls. If a ball is selected at random what is the probability that it i not a blue ball?

asked Sep 18, 2017 by priyanka.c

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If we write the numbers from 1 to 35 how many times we will get the number 4?

asked Sep 1, 2017 by priyanka.c

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Raju distributes 510 toffees among his classmate on his birthday. Each classmate gets 15 toffees. How many classmates are there?

asked Aug 31, 2017 by priyanka.c

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Fill in the following pattern <br> + 8 = 13 <br> 50 + = 130 <br> 500 + 800 =

asked Aug 14, 2017 by priyanka.c

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How many squares are there in the picture below?

asked Aug 11, 2017 by priyanka.c

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How many straight lines and how many curves does the figure has

asked Aug 7, 2017 by priyanka.c

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A horizontal overhead power line carries a current of $90A$ in east to west direction . What is the magnitude of the magnetic field due to the current $1.5 m$ below the line .

asked Jul 22, 2015 by meena.p

1 answer

The earth's magnetic field from point to point in space . Does it also charge with time ? If so on what time scale does it change appreciably ?

asked Jul 9, 2015 by meena.p

1 answer

Determine the equivalent resistors of the network shown :

asked Jul 6, 2015 by meena.p

1 answer

Consider the situation shown in the figure be what are the signs of $q_1$ and $q_2$ ?

asked Apr 21, 2015 by meena.p

1 answer

If one end of a diameter of the circle $x^2+y^2-4x-6y+11=0$ is $(3,4)$,then find the coordinate of the other end of the diameter.

asked Oct 8, 2014 by sreemathi.v

1 answer

A 5% solution (wt/volume) of cane sugar is isotonic with 0.877% (wt/volume) of urea solution.Find the molecular weight of urea,if molecular weight of sugar is 342.

asked Aug 6, 2014 by sreemathi.v

1 answer

Solve the inequality and represent the solution graphically on number line . $5x + 1 > -24; 5x -1 < 24$

asked Aug 4, 2014 by meena.p

1 answer

Iron crystallizes in a bcc system with a lattice parameter of $2.861A^{\large\circ}$.Calculate the density of iron in the bcc system.(Given : Atomic weight of $Fe=56,N=6.023\times 10^{23}mol^{-1}$)

asked Aug 1, 2014 by sreemathi.v

1 answer

Solve the following system of inequalities graphically $2x+y \geq 8; x+2y \geq 10$

asked Jul 31, 2014 by meena.p

1 answer

Solve the given inequality graphically in two -dimensional plane. $-3x+2y \geq -6$

asked Jul 30, 2014 by meena.p

1 answer

Solve the inequality for real $x 3(x-1) \leq 2(x-3)$

asked Jul 25, 2014 by meena.p

1 answer

Which of the following statements is not correct ?

asked Jul 24, 2014 by thanvigandhi_1

1 answer

A man running a racecourse notes that the sum of the distances from the two flag posts from him is always 10 m and the distance between the flag posts is 8 m. Find the equation of the posts traced by the man.

asked Jul 24, 2014 by thanvigandhi_1

1 answer

Find the equations of the hyperbola satisfying the given conditions : Vertices $(\pm 2, 0),$ foci $(\pm 3, 0)$

asked Jul 19, 2014 by thanvigandhi_1

1 answer

Find the coordinates of the foci, the vertices, the length of major axis, the minor axis, the eccentricity and the length of the latus rectum of the ellipse : $ 36x^2 + 4y^2 = 144$

asked Jul 16, 2014 by thanvigandhi_1

1 answer

Find the equation of the parabola that satisfies the given conditions : Focus (6,0); directrix x = – 6

asked Jul 14, 2014 by thanvigandhi_1

1 answer

$x^2+ y^2– 4x–8y–45=0$ find the centre and radius of the circles.

asked Jul 11, 2014 by thanvigandhi_1

1 answer

The mean and standard deviation of a group of 100 observations were found to be 20 and 3, respectively . Later on it was found that three observations were incorrect. Which are recorded by 21,21, and 18 . Find the mean and standard deviation, if the incorrect observations are omitted.

asked Jul 2, 2014 by meena.p

1 answer

Find the equation of lines passing through (1, 2) and making angle $30^{\circ}$ with $y$ - axis.

asked Jul 1, 2014 by thanvigandhi_1

1 answer

A fair coin is tossed four times and a person win Rs.1 for each head and lose Rs.1.50 for each tail that turns up.From the sample space,calculate how many different amounts of money you can have after four tosses and the probability of having each of these amounts.

asked Jul 1, 2014 by sreemathi.v

1 answer

Find mean and variance for the following frequency distribution :

asked Jun 27, 2014 by meena.p

1 answer

One die of red colour,one of white colour and one of blue colour are placed in a bag,one die is selected at random and rolled,its colour and the number on its uppermost face is noted.Describe the sample space.

asked Jun 26, 2014 by sreemathi.v

1 answer

Find the mean deviation about the mean for data : $x_i :5,7,9,10,12,15 \qquad f_i : 8,6,2,2,2,6$

asked Jun 25, 2014 by meena.p

1 answer

The co-efficient of $x$ in the expansion of $(x^2+\large\frac{\lambda}{x})^2$ is

asked Jun 25, 2014 by sreemathi.v

1 answer

Find the coefficient of $\large\frac{1}{x^{17}}$ in the expansion of $(x^4-\large\frac{1}{x^3})^{15}$

asked Jun 24, 2014 by sreemathi.v

1 answer

Find an approximation of $(0.99)^5$ using the first three terms of its expansion.

asked Jun 24, 2014 by sreemathi.v

1 answer

Find the middle term in the expansion of $(3-\large\frac{x^3}{6})^7$

asked Jun 23, 2014 by sreemathi.v

1 answer

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