1.

1). 4212). 4193). 4964). 417

Answer»

⇒ $({19.78^2} - {8.78^2} + {14.23^2} - 18.79 = ?)$

⇒ $({20^2} - {9^2} + {14^2} - 19 = ?)$

⇒ $({\RM{\;}}400 - 81 + 196 - 19 = ?)$

496 = ?

ANSWER is 496


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