a. \(6^2+8^2=100=10^2\)

b.\(10^2+24^2=676=26^2\)

c. 50^2 vì ( 99 + 1 ) : 2 = 50 

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

I clearly remember talking to him in a chance meeting last summer.

A. unplanned

B. deliberate

C. accidental

D. unintentional