(?)^1/2 = (5568 / 87)^1/3 + (72 x 2)^1/2
= (64)^1/3 + (144)^1/2
? ? = (4 + 12)² = 256

?289 - ?625 ÷ ?25
= ?17 x 17 - ?25 x 25 ÷ ?5 x 5
= 17 - 25 ÷ 5 = 17 - 5 = 12

Given, 0.764 B = 1.236 A
? B/A = 1.236 / 0.764
Now, (B - A)/(B + A) = (B/A - 1) / (B/A + 1)
= (1.236/0.764 - 1) / (1.236/0.764 + 1)
= (1.236 - 0.764)/(1.236 + 0.764)
= 0.472/2.000
= 0.236

7059 - 2350 + 1936 = ? x 50
? 8995 - 2350 = ? x 50
? ? = 6645/50 = 132.9

Required number
= 786 x 964 = 757704

? = 5/8 x 2³/₅ ÷ 4/9
= 5/8 x 13/5 x 9/4 = 117/32 = 3²¹/₃₂

(4 x 4 x 4 x 4 x 4 x 4)⁵ x (4 x 4 x 4)⁸ ÷ (4)³ = (64)^?
? (4⁶)⁵ x (4³)⁸ x 1/(4)³ = (4³)^?
? (4)³⁰ x (4)²⁴/(4)³ = (4)^{3 x ?}
? 4^{30 + 24 - 3} = 4^{3 x ?}
? 4⁵¹ = 4^{3 x ?} ? 3 x ? = 51
? ? = 51/3 = 17

(?)² ?13² + 28 ÷ 4 - (3)³ + 107
= ?169 + 7 - 27 + 107
= ?256 = 16
? ? = ?16
= 4

?289 - ?625 ÷ ?25
= ?17 x 17 - ?25 x 25 ÷ ?5 x 5
= 17 - 25 ÷ 5 = 17 - 5 = 12

Given, 0.764 x P = 1.236 x Q
? Q / P = 1.236 / 0.764
Now, (Q - P) / (Q + P) = [(Q/P) - 1] / [(Q/P) + 1]
? [(1.236/0.764) - 1] / [(1.236/0.764) + 1]
= (1.236 - 0.764) / (1.236 + 0.764)
= 0.472 / 2.000
= 0.236