Question
Question: Numerically greatest term, in the expansion of (8 – 5x)<sup>18</sup> is (if x = 2/5)...
Numerically greatest term, in the expansion of (8 – 5x)18 is (if x = 2/5)
A
1632.224
B
1632.222
C
1632.223
D
None
Answer
1632.223
Explanation
Solution
r £ 8+5(2/5)(18+1)5(2/5)= 3.8
Ž r = 3
Term = T4
T4 = 18C3 83 (5.52)15
T4 = 1632.223