Question

  Tính nhanh
a, S= \(\dfrac{1}{3}\) + \(\dfrac{1}{15}\) + \(\dfrac{1}{35}\) + \(\dfrac{1}{63}\) + \(\dfrac{1}{99}\) + \(\dfrac{1}{143}\)

b, A = \(\dfrac{1}{3}\) + \(\dfrac{1}{6}\) + \(\dfrac{1}{10}\) + \(\dfrac{1}{15}\) + \(\dfrac{1}{21}\) + \(\dfrac{1}{28}\)

c, H =\(\dfrac{4047991-2010x2009}{4050000-2011x2009}\)

d, T = \(\dfrac{2009x20010+2000}{2011x2010-2020}\)

e, P = \(\dfrac{7589-80,5x69,3}{7485,05-79x69,3}\)

f, B = 5,1 x 42,2 + 1,7 x 448 x 3 - 0,15 x 700
    Giúp mình với

Answer 1

a=78/35

b=22/12

c=1/1

d=40202090/4040090

e=1,24025667172...

f=871,82

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