5 3 4 7.5 17 ? 138
5 x 0.5 + 0.5 = 3 3 x 1 + 1 = 4 4 x 1.5 + 1.5 = 7.5 7.5 x 2 + 2 = 17 17 x 2.5 + 2.5 = 45 45 x 3 + 3 = 138
What are the values of k, if the roots of the equation x² + 2(k - 4)x + 2k = 0 are equal?
(? + 2180) ÷ 69 × 5 = 450
(0.1 × 0.2 × 0.3) + (0.3 × 0.4 × 0.5) =?
140% of 75 + 152 - 160 = ?
[(4/3) + (5/6)] of 378 = ?
4.2 × 6.5 × 7.8 = ?
0.25% of 22200 – 18.3 = ?
175 + 24% of 450 = 350 + ?
? = 120% of (652 ÷ 132 ) + 33 × 8
