The values of p for which the difference between the roots of the equation x2 + px + 8 = 0 is 2, are
20 persons are invited for a party. In how many different ways can they and the host be seated at circular table, if the two particular persons are to be seated on either side of the host?
20!
2(18!)
18!
None of these
The area of the smaller segment cut off from the circle x2 + y2 = 9 by x = 1 is
sq unit
None of the above
The distance travelled by a motor car in t seconds after the brakes are applied is s feet, wheres = 22t - 12t2. The distance travelled by the car before it stops, is
10.08 ft
10ft
11ft
11.5ft
If w ( )is a cube root of unity and (1 + w2)n = (1 + w4)n, then the least positive value of n is
2
3
5
6
The harmonic mean of the roots of the equation
is
2
4
6
8
B.
4
Given equation is,
Let x1 and x2 are the roots of the equation
If in the expansion of (1 + x)m (1 - x)n, the coefficient of x and x2 are 3 and - 6 respectively, then m is
6
9
12
24