The number of terms in the series 105 + 103 + 101 + ... + 49 + 47 is
28
30
25
22
B.
30
Hence, number of terms in given series is 30.
If the variance oftwo variables x and y are respectively 9 and 16 and covariance is 8, then the coefficient of correlation between x and y will be
If the points (k, 2 - 2k), (- k + 1, 2k) and (- 4 - k, 6 - 2) are collinear, then k is equal to
- 1
1
The anti-derivative F of f defined by f(x) = 4x3 - 6x2 + 2x + 5, F(0) = 5, is
x4 - 2x3 + x2 + 5x
12x2 - 12x + 2
16x4 - 18x3 + 4x2 + 5x
x4 - 2x3 + x2 + 5x + 5