Amit invested a certain sum of money in ₹ 100 shares, paying a 7.5% dividend. The rate of return on his investment is 10%. The money invested by Amit to purchase 10 shares is :

1. ₹ 250

2. ₹ 750

3. ₹ 900

4. ₹ 1100

If -3 ≤ -4x + 5 and x ∈ W, then the solution set is :

1. {…….-3, -2, -1, 0, 1, 2, 3, …….}

2. {1, 2}

3. {0, 1, 2}

4. {2, 3, 4, 5}

The value/s of 'k' for which the quadratic equation 2x² - kx + k = 0 has equal roots is (are) :

1. 0 only

2. 4, 0

3. 8 only

4. 0, 8

If x = -2 is one of the solutions of the quadratic equation x² + 3a - x = 0, then the value of 'a' is :

1. -8

2. -2

3. $-\dfrac{1}{3}$

4. $\dfrac{1}{3}$