12 + 1 + 22 + 2 + 32 + 3 + ... + n2 + n is equal to
C.
Given series is,
12 + 1 + 22 + 2 + 32 + 3 + ... + n2 + n
=
The locus of the points z which satisfy the condition
a straight line
a circle
a parabola
None of the above
The sides of triangle are in the ratio 1 : √3 : 2, then the angles of the triangle are in ratio
1 : 3 : 5
2 : 3 : 1
3 : 2 : 1
1 : 2 : 3
A particle moves along a straight line according to the laws = 16- 2t + 3t, where s metres is the distance of the particle from a fixed point at the end of t seconds. The acceleration of the particle at the end of 2s is
36m/s2
34m/s2
36m
None of these