Class 8 - Mathematics Mock Tests

The value of (5² − 3²) ÷ 4 is:

The scalar product (dot product) of a → = 2i − j + 3k and b → = 3i + 2j + k is:

The nth term of an arithmetic progression is given by aₙ = 3 − 4n. What is the common difference of the AP?

If the lines x = y = z, x/2 = y/3 = z/5, and x/3 = y/5 = z/k are coplanar, then k equals:

The integrating factor of dy/dx + (1/x)y = x² is:

If f(x) = |x| * sin(x), then f is differentiable at:

The distance between the points (1, 2) and (4, 6) is:

The number of real roots of the equation x² + 4x + 8 = 0 is: