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Cube of any odd number is even.

Concept: Concept of Cube Number

A perfect cube does not end with two zeroes.

Concept: Concept of Cube Number

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If square of a number ends with 5, then its cube ends with 25.

Concept: Concept of Cube Number

There is no perfect cube which ends with 8.

Concept: Concept of Cube Number

The cube of a two-digit number may be a three-digit number.

Concept: Concept of Cube Number

The cube of a two-digit number may have seven or more digits.

Concept: Concept of Cube Number

The cube of a single-digit number may be a single-digit number.

Concept: Concept of Cube Number

Find the ratio of the speed of a cycle 15 km per hour to the speed of scooter 30 km per hour.

Concept: Concept of Ratio

Find the ratio of 5 m to 10 km.

Concept: Concept of Ratio

Find the ratio of 50 paise to Rs 5.

Concept: Concept of Ratio

Convert the following ratio to a percentage.

3 : 4

Concept: Concept of Ratio

Convert the following ratio to a percentage.

2 : 3

Concept: Concept of Ratio

72% of 25 students are good in mathematics. How many are not good in mathematics?

Concept: Concept of Ratio

A football team won 10 matches out of the total number of matches they played. If their win percentage was 40, then how many matches did they play in all?

Concept: Concept of Ratio

If Chameli had Rs 600 left after spending 75% of her money, how much did she have in the beginning?

Concept: Concept of Ratio

If 60% people in city like cricket, 30% like football, and the remaining like other games, then what percentage of the people like other games? If the total number of people is 50 lakh, find the exact number who like each type of game.

Concept: Concept of Ratio

A square and a rectangular field with measurements as given in the figure have the same perimeter. Which field has a larger area?

Concept: Mensuration

Mrs. Kaushik has a square plot with the measurement as shown in the following figure. She wants to construct a house in the middle of the plot. A garden is developed around the house. Find the total cost of developing a garden around the house at the rate of Rs 55 per m^{2}.

Concept: Mensuration

The shape of a garden is rectangular in the middle and semi circular at the ends as shown in the diagram. Find the area and the perimeter of the garden [Length of rectangle is 20 − (3.5 + 3.5) metres]

Concept: Mensuration

A flooring tile has the shape of a parallelogram whose base is 24 cm and the corresponding height is 10 cm. How many such tiles are required to cover a floor of area 1080 m^{2}? (If required you can split the tiles in whatever way you want to fill up the corners).

Concept: Mensuration