A mixture of paint is prepared by mixing 2 parts of red pigments with 5 parts of the base. Using the given information in the following table, find the values of a, b and c to get the required mixture of paint.

1. a = 10, b = 10, c = 10

2. a = 5, b = 2, c = 5

3. a = 10, b = 5, c = 10

4. a = 10, b = 5, c = 15

An article which is marked at ₹ 1200 is available at a discount of 20% and the rate of GST is 18%. The amount of SGST is :

1. ₹ 216.00

2. ₹ 172.80

3. ₹ 108.00

4. ₹ 86.40

The roots of quadratic equation x² - 1 = 0 are :

1. 0

2. 1

3. -1

4. ±1

Which of the following equation represents a line equally inclined to the axes ?

1. 2x - 3y + 7 = 0

2. x - y = 7

3. x = 7

4. y = -7