In natural numbers,` 4x + 5 = – 7` has ________solution.

In natural numbers, x - 5 = - 5 has ________ solution.

In whole numbers, x + 8 = 12 – 4 has _________ solution.

In integers, 4x – 1 = 8 has_________ solution .

If A = { x : x is an even natural number}, B = { x : x is a natural number and multiple of 5 } and C= { x : x is a natural number and multiple of 10}, then what is A cap(B cup C) equal to ?

x + 7 = 10 has the solution _________.

Write the following in roster from: (i) The set of all the solutions x^(2) -7x+6=0 (ii) The set of all the solutions of (x-1)(x+8) =0 (iii) The set of all natural numbers x such that 4x+18 lt25 (iv) The set of all natural numbers x such that 4x+18lt25

Define a relation R on the set N of all natural numbers by R = {(x, y) : y = x + 5, x is a natural number less than 4)

Show that the system of equations 3x - 5y = 7, 6x - 10 y = 3 . has no solution.

The number of natural numbers n for which the equation (x-8)x=(n-10) has no real solutions equal to