19: 304= 19 × (19 – 3) = 304. Similarly, 22 × (22 – 3) = 418.
?= √(4 × ∛(16 × √(4 × ∛(16 ×…… ∝)) ) )
(2/5)(32% of 4500 – 440) = ? × 8
33 × 5 - ?% of 250 = 62 - 6
36% of 250 + 26 ÷ 2 × ? = 207
1365 ÷ 15 + (? ÷ 5) = 62 × 3.5
((0.1)3+ (1.8)3+ (1.1)3- 0.3 ×1.8 ×1.1)/((0.1)2+ (1.8)2+ (1.1)2- (0.18)- (...
(√ 1444 ÷ 5) × 3.25 = ?
3 √8 × √36 × 13 = ? × √169
74% of 2840 + 80% of 1640 - ?= 47²
