If the chord `y=mx+1`, of the circle `x^2+y^2=1` subtends an angle of measure `45 °` of the major segment of the circle then value of `m` is
(1)   `2`       (2)   `2`      
(3)   `-1`       (4)   None of these      

If 2^33 is divided by 17 , then the remainder is (1)    15        (2)    2         (3)    4         (4)    9

If the difference between mean and m0de is 63, the difference between mean and median is 189           (b)  21          (c)  31.5          (d)  48.5

What is a regular polygon? State the name of a regular polygon of (i) 3 sides             (ii)  4 sides             (iii)  6 sides

If int (1+xtanx)^(-2) dx=1/(x+f(x))+c; then value of f(x) is (1)   xtanx    (2)   cotx    (3)   tanx    (4)   tan^2x

If a^(1/2)+b^(1/2)-c^(1/2)=0 , then the value of (a+b-c)^2 is: (A)    2ab    (B)    2bc    (C)    4ab    (D)    4ac

Find the volume in cubic decimetre of each of the cubes whose side is (i)1.5m          (ii)  75cm        (iii)  2dm 5cm

If the circumference of a circle is equal to the perimeter of a square then the ratio of their areas is: (a)22:7       (b)  14:11       (c)  7:22          (d)  7:11

The measure of the angle between the internal and external bisectors of an angle is: (A)   60°     (B)   70°      (C)   80°      (D)   90°

The mean and standard deviation of marks obtained by 50 students of a class in three subject, Mathematics, Physics and Chemistry are given below: Subject      Mathematics         Physics                Chemistry                           Mean            42                             32                          40.9 Standard       12                            15                          20 Deviation Which of the three subjects shows the highest variability in marks and which shows the lowest?

A variable takes the values of 0 , 1 , 2 ,....., n with frequencies proportional to the binomial coefficients C_0 , C_1 , C_2 ,......, C_n , then mean of the distribution is (1)   (n(n+1))/4       (2)   n/2       (3)   (n(n-1))/2       (4)   (n(n+1))/2