The probability that exactly one boy is
selected?
A.
B.
C.
D.
8.
Solve the equation logo(2x² + 5x - 2) = 1.
A. r=- or - 4 B. x=- or 4
C. x= or 4
D. x = or -4
Express p in terms of q,
time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)
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