MCQs of chapter#6

1.     If 5,8 are the two A.M’s between a and b. what is a and b?

a)     2,9

b)    3,11

c)     2,11

d)    3,9

2.     For what value of n, is (aⁿ+bⁿ)/(a^n-1+b^n-1) the arithmetic mean between a and b.

a)     0

b)    ½

c)     -½

d)    None of these

3.     The sum of an indicated number of terms in a sequence is called

a)     Series

b)    Sequence

c)     Average

d)    Arithmetic mean