The value of 102 x 98 is:

1. 6999

2. 6696

3. 9696

4. 9996

(x + 3) (x + 3) - (x - 2) (x - 2) is equal to:

1. 10x + 5

2. 10x - 5

3. 5 - 10x

4. none of these

Statement 1: Cube of a binomial : (a - b)³ = a³ + 3a²b - 3ab² - b³

Statement 2: (a - b)² - (a + b)² = 4ab.

Which of the following options is correct?

1. Both the statements are true.

2. Both the statements are false.

3. Statement 1 is true, and statement 2 is false.

4. Statement 1 is false, and statement 2 is true.

Assertion (A) : Use appropriate identity, we get 22.5 x 21.5 = 484.75.

Reason (R) : The product: (x + y)(x - y) = x² - y².

1. Both A and R are correct, and R is the correct explanation for A.

2. Both A and R are correct, and R is not the correct explanation for A.

3. A is true, but R is false.

4. A is false, but R is true.