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If 3 is a zero of the polynomial f(x) = x4 – x3 – 8x2 + kx + 12, then the value of k is –
The angle which, an arc of a circle subtends at the centre is ….. the angle which it subtends at any point on the remaining part of the circumference.
A data is such that its maximum value is 75 and range is 20, then the minimum value is
The circumference of a circle whose diameter is 4.2cm is
Direction: In the following questions, a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements, mark the correct answer as
Assertion : The measure of ∠AOC = 60º
Reason : Angle subtended by an arc of a circle at the centre of the circle is double the angle subtended by arc on the circumference.
The probability of an event that is certain to happen is
Direction: India's national animal Tiger (which has also been under the radar of the government as its population declined in the country) has witnessed an increase in its population.
A survey was done by the Ministry of Environment, Forests and Climate change, according to which tiger population is on rise at the rate of 6 per cent every year from 2006 and 2018.
Pranav has found a report on status of tigers in India in last 100 years. He has some queries as follow :
Q. How much decrease in number of tigers was there between 1900 and 1960?
Find the largest number which divides 62,132,237 to leave the same reminder
If altitude of the sun is 60°, the height of a tower which casts a shadow of length 30m is
Read the following text and answer the following questions on the basis of the same:
On a weekend Rani was playing cards with her family. The deck has 52 cards.If her brother drew one card.
Find the probability of getting a jack of hearts.
In the given figure, the value of x which makes POQ a straight line is :
If ax2 + bx + c, a ≠ 0 is factorizable into product of two linear factors, then roots of ax2 + bx + c = 0 can be found by equating each factor to
The diameter of a wheel is 1.26 m. The distance travelled in 500 revolutions is
The common difference of the A.P whose Sn = 3n2+ 2n is
Given that one of the zeroes of the cubic polynomial ax3 + bx2 + cx + d is zero, the product of the other two zeroes is
Perimeter of a parallelogram is 22 cm. If the longer side, measures 6.5 cm, the measure of the shorter side will be:
DIRECTION : In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Sum of first 10 terms of the arithmetic progression - 0.5 , - 1.0, - 1.5 , .......... is -27.5
Reason : Sum of n terms of an A.P. is given as where a = first term, d = common difference.
If (x-2) is the factor of x2 + 2x+ a, find the value of ‘a’.
In the given figure, PQ||RS and EF||QS. If ∠PQS = 60°, then the measure of ∠RFE is:
Direction: Ladli Scheme was launched by the Delhi Government in the year 2008. This scheme helps to make women strong and will empower a girl child. This scheme was started in 2008.
Read the above bar graph and answer the following questions :
Q. What was the difference in budget in the year 2008 - 09 and 2009 - 10?
Five friends playing a game in which they are standing at different positions, P, S, T, R and
Rohan is watching them playing. Few questions came to Rohan's mind while watching the game. Give answer to his questions by looking at the figure.
Q. Name the point whose y-co-ordinate is zero :
Progressions with equal common difference are known as
If a chord of a circle of radius14cm subtends a right angle at the centre of the circle, then the area of the sector is