The 21st term of the AP whose first two terms are -3 and 4, is
If (x-1) is a factor of ax – a, then find the value of a
If sec 4A = cosec (A-20°),where 4A is an acute angle, find the value of A
Customers are asked to stand in the lines. If one customer is extra in a line, then there would be two less lines. If one customer is less in line, there would be three more lines. Find the total number of customers.
The radius of a cylindrical tank is 28m. If its capacity is equal to that of a rectangular tank of size 28mx16mx11m, then its depth is
The mean of five observations is 15. If the mean of first three observations is 14 and that of last three is 17, then the third observation is
In ΔABC, D, E and F are respectively mid points of BC, CA and AB. If the lengths of side AB, BC and CA are 7 cm, 8 cm and 9 cm respectively, the perimeter of DEF will be
(p + q)th and (p – q)th terms of an A.P. are respectively m and n. The pth term is :
If a hemi-spherical dome has an inner diameter of 28 m, then its volume (in m3) is :
Two coins are tossed together. The probability of getting head on both the coins is
If “1” is a zero of the polynomial P(a) = x2a2 – 2xa + 3x – 2, then x = ______
ABCD is a Parallelogram in which AB = 9.5cm and its perimeter is 30cm. Find the length of each side of the Parallelogram?
In the given figure, O is the centre of the circle, and AC is its diameter. Another circle with AB as diameter is drawn. If AC = 54 cm and BC = 10 cm, the area of shaded portion will be
The bisectors of the base angles of an isosceles triangle ABC, with AB = AC, meet at O. If ∠B = ∠C = 50°. What is the measure of angle O?
Read the following text and answer the following questions on the basis of the same:
A small scale industry produces a certain boxes of candles in a day. Number of boxes prepared by each worked on a particular day was 2 more than thrice the number of workers working in the industry. The number of boxes produced in a particular day was 85.
Q. Represent the above equation in quadratic equation.
The graph of a cubic polynomial x3 – 4x meets the x – axis at (– 2, 0), (0, 0) and (2, 0), then the zeroes of the polynomial are
In the given figure, ABCD is a quadrilateral inscribed in circle with centre O. CD is produced to E. If ∠ADE = 95o and ∠OBA = 30o, then ∠OAC is equal to
If two parallel lines are cut by a transversal, then the pairs of ___________ angles are congruent.
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 red face card.
The largest number which divides 615 and 963 leaving remainder 6 in each case is
If A1 and A2 be the two A.M.s between two numbers a and b, then (2A1 – A2) (2A2 – A1) is equal to :