What should come in place of the question mark (?) in the following number series ?
1548, 516, 129, 43, ?
949, 189.8, ?, 22.776, 11.388, 6.8328
121, 144, 190, 259, ?, 466
14, 43.5, 264, ?, 76188
41, 164, 2624, ?, 6045696
What should come in place of the question mark (?) in the following questions ?
(47 × 588) ÷ (28 × 120) = ?
45% of 224 × ?% of 120 = 8104.32
$$7921 \times 51+ 374 = (?)^{3}$$
$$6573 \div 21 \times (0.2)^{2} = ?$$
74156 - ? - 321- 20 + 520 = 69894