Recent questions tagged q3

Find out the place value of the number 4 according to international place value system <br>85, 140, 365, 782

asked Oct 19, 2017 by priyanka.c

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Following table is for which logic gate:

asked Oct 8, 2017 by priyanka.c

1 answer

Radioactive material 'A' has decay constant $8 \lambda$ and material 'B' has decay constant $\lambda$. Initially they have same number of nuclei. After what time, the ratio of number of nuclei of material 'B' to that 'A' will be $\large\frac{1}{e} $?

asked Oct 7, 2017 by meena.p

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Which of the following mathematical symbol represents Kite?

asked Oct 2, 2017 by priyanka.c

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How much is 50 rupees and 75 paise from the following

asked Sep 25, 2017 by priyanka.c

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How many 8's are there in the following number sequence which is immediately preceded by 4 and not followed by 7? <br> 7 8 4 7 4 8 8 3 5 1 4 8 7 2 1 4 8 5

asked Sep 20, 2017 by priyanka.c

1 answer

How many vertices does the given figure has

asked Sep 18, 2017 by priyanka.c

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Find the fraction of the shaded portion from the following figure

asked Sep 3, 2017 by priyanka.c

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The number is a single digit. It is an even number and divisible by 2. It looks like pair of glasses on their side. It looks the same if written upside down. What is the number

asked Aug 31, 2017 by priyanka.c

1 answer

Convert 1m 75cm = _____ cm

asked Aug 14, 2017 by priyanka.c

1 answer

Harish wrote the number sentence below :

asked Aug 11, 2017 by priyanka.c

1 answer

Ajay wants to stick 20 smileys on his notebook? What is the way he can put the smileys on his notebook

asked Aug 4, 2017 by priyanka.c

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A 4.5 cm needle is placed away from a convex mirror of focal length 15 cm . give the location of the image and the magnification .

asked Feb 10, 2016 by meena.p

1 answer

A long straight wire carries a current of $35\;A$ what is the magnitude of the field B at a point $20\;cm$ away from the wire ?

asked Jul 22, 2015 by meena.p

1 answer

If you made a map of magnetic field line at Melbourne in Australian, would the line seem to go into the ground or come out the ground ?

asked Jul 9, 2015 by meena.p

1 answer

Is Ohm's law universally applicable for all conducting element ? If not give example of elements which do not obey Ohm's law.

asked Jun 29, 2015 by meena.p

1 answer

Name the physical quantity whose $S.I$ unit is $JC^{-1}$. Is it a scalar or a vector quantity.

asked Apr 21, 2015 by meena.p

1 answer

Solve the inequality $-3 \leq 4 - \large\frac{7x}{2} $$ \leq 18$

asked Aug 1, 2014 by meena.p

1 answer

Using X-rays of wavelength 154.1pm and starting from the glancing angle,the reflection from silver crystal was found to occur at $\theta=22.20^{\large\circ}$.Calculate the spacing between the planes of Ag atoms that gave rise to the above reflection.($\sin 22.20^{\large\circ}=0.3778$)

asked Jul 31, 2014 by sreemathi.v

1 answer

Which of the following steels does not contain carbon ?

asked Jul 31, 2014 by thanvigandhi_1

1 answer

Solve the following system of inequalities graphically $2x +y \geq 6; 3x +4y \leq 12$

asked Jul 30, 2014 by meena.p

1 answer

Solve the given inequality graphically in two- dimensional plane $3x+4y \leq 12$

asked Jul 29, 2014 by meena.p

1 answer

Show that the statement "If $x$ is an integer and $x^2$ is even, then $x$ is also even." using contrapositive method.

asked Jul 26, 2014 by rvidyagovindarajan_1

1 answer

Solve $5 x-3 < 7 $ when (i) x is an integer (ii) x is a real number

asked Jul 25, 2014 by meena.p

1 answer

The atomic number of indium which belongs to 5th period is

asked Jul 24, 2014 by thanvigandhi_1

1 answer

The cable of a uniformly loaded suspension bridge hangs in the form of a parabola. The roadway which is horizontal and 100 m long is supported by vertical wires attached to the cable, the longest wire being 30 m and the shortest being 6 m. Find the length of a supporting wire attached to the roadway 18 m from the middle.

asked Jul 23, 2014 by thanvigandhi_1

1 answer

Find the coordinates of the foci and the vertices, the eccentricity and the length of the latus rectum of the hyperbolas : $9y^2–4x^2= 36$

asked Jul 19, 2014 by thanvigandhi_1

1 answer

Check whether the two statements given are negation of each other or not. Give reason " $p: x+y=y+x$ is true for every real number $x\:\:and\:\:y$. $q:$ There exists real numbers $x\:\:and\:\:y$ for which $x+y=y+x$.

asked Jul 16, 2014 by rvidyagovindarajan_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 : $ \large\frac{x^2}{16}$$ +\large\frac{y^2}{9}$$=1$

asked Jul 15, 2014 by thanvigandhi_1

1 answer

Find the coordinates of the focus, axis of the parabola, the equation of the directrix and the length of the latus rectum for the following : $ y^2=-8x$

asked Jul 14, 2014 by thanvigandhi_1

1 answer

Find the equation of the circle with centre $ \bigg( \large\frac{1}{2}$$, \large\frac{1}{4} \bigg)$ and radius $ \large\frac{1}{12}$

asked Jul 11, 2014 by thanvigandhi_1

1 answer

Prove that \[ 2sin^{-1} \frac{3}{5} = tan^{-1} \frac{24}{7} \]

asked Jul 9, 2014 by balaji.thirumalai

1 answer

Suppose an integer from 1 through 1000 is chosen at random,find the probability that the integer is a multiple of 2 or a multiple of 9.

asked Jul 7, 2014 by sreemathi.v

1 answer

The mean and standard deviation of some data for the time taken to complete a test are calculated with the following results:Number of observations =$25$,mean =$18.2$ seconds, standard deviation $=3.25$ seconds. Further another set of $15$ observations $x_1,x_2,......x_5$ also in seconds is now available and we have $\sum\limits_{i=1} ^{15}x_i =279$ and $\sum \limits_{i=1} ^{15} x_i^2 =5524$Calculate the standard deviation based on all $40$ observations

asked Jul 3, 2014 by meena.p

1 answer

The mean and standard deviation of six observations are $8$ and $4$ respectively. If each observation is multiplied by $3$, find the new mean and new standard deviation of the resulting observation.

asked Jul 1, 2014 by meena.p

1 answer

An analysis of monthly wages paid to workers in two firms A and B , belonging to the same industry, gives the following results. (i) Which firm A and B pays larger amount as monthly wages. (ii) which firm A or B shows greater variability in individual wages?

asked Jul 1, 2014 by meena.p

1 answer

Find the angle between the lines $y = (2 – \sqrt3 ) (x + 5)$ and $y = (2 + \sqrt3 ) (x – 7).$

asked Jun 30, 2014 by thanvigandhi_1

1 answer

An experiment involves rolling a pair of dice and recording the numbers that come up.Describe the following events : A : The sum is greater than 8,B : 2 occurs on either die,C : The sum is atleast 7 and multiple of 3.Which pairs of these events are mutually exclusive ?

asked Jun 27, 2014 by sreemathi.v

1 answer

Find first 10 multiples of 3

asked Jun 27, 2014 by meena.p

1 answer

Describe the sample space for the indicated experiment : A coin is tossed four times

asked Jun 26, 2014 by sreemathi.v

1 answer

Find the mean deviation about the mean for the data $13,17,16,14,11,13,10,16,11,18,12,17$

asked Jun 25, 2014 by meena.p

1 answer

The coefficient if $x^n$ in the expansion of $(1+x+x^2+...)^{-n}$ is

asked Jun 25, 2014 by sreemathi.v

1 answer

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