S-1-30 The mean of the following frequency distribution is 47.

The mean of the following frequency distribution is 47. Find the value of ‘p’. Ans :

S-1-29 A container opens at the top and made up of metal

A container opens at the top and made up of metal sheet is in the form of a frustum of a cone of height 16cm with diameters of its lower and upper ends as 16cm and 40cm respectively. Find the cost of Read More …

S-1-28 Suppose a person is standing on a tower of height

Suppose a person is standing on a tower of height 15(√3+1)m and observing a car coming towards the tower. He observed that angle of depression changes from 30° to 45°, in 3 seconds. Find the speed of the car. Ans :

S-1-27 Construct an isosceles triangle whose base is 7cm

Construct an isosceles triangle whose base is 7cm and altitude 5 cm and then construct another triangle whose sides are 3/4 times the corresponding sides of the isosceles triangle. Ans:

S-1-26 Prove that the lengths of two tangents drawn

Prove that the lengths of two tangents drawn from an external point to a circle are equal. Ans :

S-1-25 In the adjoining figure, PQR, is a right triangle,

In the adjoining figure, PQR, is a right triangle, right angled at Q. X and Y are the points on PQ and QR such that PX : XQ = 1 : 2 and QY : YR = 2 : 1. Read More …

S-1-24 A thief away from a Police Station with a uniform speed

A thief away from a Police Station with a uniform speed 100m/minutes. After one minute a Policeman runs behind the thief to catch him. He goes at a speed of 100m/minute in first minute and increases the speed 10m/minute on each succeeding Read More …

S-1-23 Solve graphically the following equations 2x + 3y = 9;

Solve graphically the following equations 2x + 3y = 9; x – 2y =1. Shade the region bounded by the two lines and the x axis. Or Check graphically whether the pair of equations x + y = 8 and x Read More …

S-1-22 What is the probability that a leap year,

What is the probability that a leap year, selected at random will contain 53 Thursdays? Ans : There are 366 days in a leap year that contain 52 weeks and 2 more days. So, 52 Thursdays and 2 days. These 2 Read More …

S-1-21 The following table shows the gain in weight by 50 children in a year.

The following table shows the gain in weight by 50 children in a year. Calculate modal gain in weight. Gain in weight (in kg) 1 – 3 3 – 5 5 – 7 7 – 9 9- 11 11-13 No. of Read More …

S-1-20 A boy is cycling such that the wheels of the cycle are making140

A boy is cycling such that the wheels of the cycle are making 140 revolutions per minute. If the diameter of the wheel is 60 cm, calculate the speed in Km per hour in which the boy is cycling. Ans:

Page 1 of 3
1 2 3