ICSE ICSE Class 8 - CISCE Question Bank Solutions

Find the subset of the following set:

{p : p is a letter in the word ‘poor’}

If C is the set of letters in the word “cooler”, find: n(C)

If C is the set of letters in the word “cooler”, find: The number of its subsets.

If C is the set of letters in the word “cooler”, find: Number of its proper subsets.

If T = {x : x is a letter in the word ‘TEETH’}, find all its subsets.

Evaluate :

−7x² + 18x² + 3x² − 5x²

Evaluate :

b²y − 9b²y + 2b²y − 5b²y

Evaluate :

abx − 15abx − 10abx + 32abx

Evaluate :

7x − 9y + 3 − 3x − 5y + 8

Evaluate :

3x² + 5xy − 4y² + x² − 8xy − 5y²

Add : 5a + 3b, a − 2b, 3a + 5b

Fill in the blanks :
In case of regular polygon, with :

Add : 8x − 3y + 7z, −4x + 5y − 4z, −x − y − 2z

Find the number of sides in a regular polygon, if its interior angle is: 160°

Find the number of sides in a regular polygon, if its interior angle is: 135°

Add : 3b − 7c + 10, 5c −  2b −  15, 15 + 12c + b

Find the number of sides in a regular polygon, if its interior angle is: `1 1/5` of a right angle

Add : a − 3b + 3; 2a + 5 − 3c; 6c − 15 + 6b

Given, A = {Triangles}, B = {Isosceles triangles}, C = {Equilateral triangles}. State the following statement is true or false. Give reasons.
A ⊂ B

Add : 13ab − 9cd − xy, 5xy, 15cd − 7ab, 6xy − 3cd