Question

6- o sexagésimo termo da
P.A. (2,8, 14...) é:
a) 399
b) 359
c) 398
d) 356
e) n.d.a.
7- O valor de X na P.A.
(4, a, 10, b, c, 19, d, X)
b) 33
c) 42
d) 28
e) n.d.a.
a) 25

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Answer 1

6 - a₆₀ = a₁ + 59r

a₆₀ = 2 + 59*(6)

a₆₀ = 2 + 354

a₆₀ = 356

Letra D.

7 - ( 4, 7, 10, 13, 16, 19, 22, 25 )

a = 7

b = 13

c = 16

d = 22

x = 25

Letra A.