maths quiz 3

.

• 8

• 27

• 64

• 32

f(x) = x3 – (1/x3), then f(x) + f(1/x) is equal to

• 2x³

• 2/x³

• 0

• 1

The domain and range of the real function f defined by f(x) = (4 – x)/(x – 4) is given by..

• Domain = R, Range = {–1, 1}

• Domain = R – {1}, Range = R

• Domain = R – {4}, Range = {– 1}

• Domain = R – {– 4}, Range = {–1, 1}

The 3rd term of G.P is 4. Then the product of the first 5 terms is:

• 4³

• 4⁵

• 4⁶

• None of these..

The next term of the given sequence 1, 5, 14, 30, 55, … is

(a)  

If a, b, c are in arithmetic progression, then..

• b = a+c

• 2b = a+c

• b² = a+c

• 2b2 = a+c

The number of ways in which 8 students can be seated in a line is..

(a)  

The number of ways 4 boys and 3 girls can be seated in a row so that they are alternate is..?

(a)  

The coefficient of the middle term in the expansion of (2+3x)⁴ is:

• 128

• 32

• 216

• 64

The coefficient of the middle term in the expansion of (2+3x)⁴ is:

• -1760 x⁹ × y³

• -1670 x⁹ × y³

• -7160 x⁹ × y³

• -1607 x⁹ × y³