Maths | CBSE Board | Grade 10 | 2016
Q. The houses in a row numbered consecutively from 1 to 49. Show that there exists a value of X such that sum of numbers of houses preceding the house numbered X is equal to sum of the numbers of houses following X.
View Solution
Q. In the figure, a tent is in the shape of a cylinder surmounted by a conical top of same diameter. If the height and diameter of cylindrical part are 2.1 m and 3 m respectively and the slant height of conical part is 2.8 m, find the cost of canvas needed to make the tent if the canvas is available at the rate of Rs. 500/sq. metre. Consider (π=227)

View Solution
Q. The angle of elevation of a tower from a point 150 m away from foot of tower is 60. Find the height of tower.
View Solution
Q. The 4th term of an A.P. is zero. Prove that the 25th term of the A.P. is three times its 11th term.
View Solution
Q. Prove that the lengths of the tangents drawn from an external point to a circle are equal.
Punjab Board
View Solution
Q. A card is drawn at random from a well shuffled pack of 52 playing cards. Find the probability of getting neither a red card nor a queen.
View Solution
Q. If 5 is a root of the quadratic equation 2x2+px15=0 and the quadratic equation p(x2+x)+k=0 has equal roots, find the value of k.
View Solution
Q. In the figure, O is the centre of a circle such that diameter AB=13 cm and AC=12 cm. BC is joined. Find the area of the shaded region. (Take π=3.14).

View Solution
Q. A conical vessel, with base radius 5 cm and height 24 cm, is full of water. This water is emptied into a cylindrical vessel of base radius 10 cm. Find the height to which the water will rise in the cylindrical vessel. (Use π=227)
View Solution
Q. Three different coins are tossed together. Find the probability of getting
(iii) at least two tails
View Solution
Q. Prove that the points (3, 0), (1, 3) and (4, 1) are the vertices of a right-angled isosceles triangle.
View Solution
Q. The above figure shows a sector OAP of a circle with centre O, containing θ. AB is perpendicular to the radius OA and meets OP produced at B. Prove that the perimeter of shaded region is r[tanθ+secθ+πθ1801].

View Solution
Q. In the figure, from an external point P, two tangents PT and PS are drawn to a circle with centre O and radius r. If OP=2r, show that OTS= OST=30.

View Solution
Q. A number x is selected at random from the numbers 1, 2, 3 and 4. Another number y is selected at random from the numbers 1, 4, 9 and 16. Find the probability that product of x and y is less than 16.
View Solution
Q. A sphere of diameter 12 cm, is dropped in a right circular cylindrical vessel, partly filled with water. If the sphere is completely submerged in water, the water level in the cylindrical vessel rises by 359 cm. Find the diameter of the cylindrical vessel.
View Solution
Q. If the point P(x, y) is equidistant from the points A(a+b, ba) and B(ab, a+b). Prove that bx=ay.
View Solution
Q. 1(x1)(x2)+1(x2)(x3)=23, x1, 2, 3. Find sum of values of x
View Solution
Q. The angle of elevation of the top Q of a vertical tower PQ from a point X on the ground is 60. From a point Y, 40 m vertically above X, the angle of elevation of the top Q of tower is 45. Find the height of the tower PQ and the distance PX. (Use 3=1.73)
View Solution
Q. For what value of k will k+9, 2k1 and 2k+7 are the consecutive terms of an A.P?
View Solution
Q. In the above figure, a quadrilateral ABCD is drawn to circumscribe a circle, with centre O, in such a way that the sides AB, BC, CD and DA touch the circle at the points P, Q, R and S respectively. Prove that AB+CD= BC + DA.

View Solution
Q. Due to heavy floods in a state, thousands were rendered homeless. 50 schools collectively offered to the state government to provide place and the canvas for 1500 tents to be fixed by the governments and decided to share the whole expenditure equally. The lower part of each tent is cylindrical of base radius 2.8 m and height 3.5 m, with conical upper part of same base radius but of height 2.1 m. If the canvas used to make the tents costs Rs. 120 per sq.m , find the amount shared by each school to set up the tents. Enter the answer in the nearest integer. (Use π=227)
View Solution
Q. Draw a circle of radius 4 cm. Draw two tangents to the circle inclined at an angle of 60 to each other.
View Solution
Q. Let P and Q be the points of trisection of the line segment joining the points A(2, 2) and B(7, 4) such that P is nearer to A. Find the coordinates of P and Q.
View Solution
Q. In the figure, the vertices of ABC are A(4, 6), B(1, 5) and C(7, 2). A line-segment DE is drawn to intersect the sides AB and AC at D and E respectively such that ADAB=AEAC=13. Calculate the area of ΔADE.

1. 1532 sq. units
2. 6523 sq. units
3. 56 sq. units
4. 6 sq. units
View Solution
Q. A ladder leaning against a wall makes an angle of 60 with the horizontal. If the foot of the ladder is 2.5 m away from the wall, find the length of the ladder.
View Solution
Q. PQ is a tangent at a point C to a circle with centre O. if AB is a diameter and CAB=30, find PCA.

View Solution
Q. Solve for x: 1x+1+2x+2=4x+4, x1, 2, 4
View Solution
Q. In the figure, find the area of the shaded region, enclosed between two concentric circles of radii 7 cm and 14 cm where AOC=40. Consider π=227.

View Solution
Q. The ratio of the sum of first n terms of two A.Ps is (7n+1):(4n+27), the ratio of their 10th term is a:b, find a+b.
View Solution
Q. In the figure, two equal circles, with centres O and O, touch each other at X.OX produced meets the circle with centre O at A.AC is tangent to the circle with centre O, at the point C.
OD is perpendicular to AC. Find the value of DOCO.

View Solution