1. 

Select the correct combination of mathematical signs to replace '★' signs and to balance the following equation.

(8 ★ 7 ★ 6) ★ 5 ★ 10
A. x - ÷ =
B. - x ÷ +
C. + - ÷ x
D. x + = ÷

Answer: Option A

Explanation:

Given equation is (8 ★ 7 ★ 6) ★ 5 ★ 10
Now, replacing ★ sign with the mathematical signs in option (A),

(8 x 7 - 6) ÷ 5 = 10

 (56 - 6) ÷ 5 = 10  50 ÷ 5 = 10

10 = 10