Class 10 - Mathematics Mock Tests

Let T = {0, 1}. The number of 3 x 3 matrices with entries from T such that the sum of each row equals the sum of the corresponding column (R_i = C_i for i = 1, 2, 3) is equal to:

The solution of the system 2x + y = 5 and x - y = 1 is:

The mean of 10 numbers is 25. If one number is excluded, the mean becomes 24. The excluded number is:

If a = i + j + k, b = i − j + k, then the projection of a on b is:

The dot product of two perpendicular vectors is:

The area of the region bounded by the curve y = x² and the line y = 4 is:

The vector equation of the line passing through the point with position vector 2î − ĵ + 3k̂ and parallel to the vector î + 2ĵ − k̂ is:

The area of a triangle with base 12 cm and height 8 cm is: