Solve for `x, 8x + 4 le 20` in the set of natural numbers

Solve for t, 3t - 8 le -t in the set of whole numbers

Let A={x in W, " the set of whole numbers and" xlt3} . B={x in N, " the set of natural numbers and" 2 le x lt 4} and C={3, 4}, then how many elements will (AuuB)xxC contain?

Let U = {x in N: 1 le x le 10} be the universal set, N being the set of natural numbers If A = {1, 2, 3, 4} and B = {2, 3, 6, 10}, then what is the complement of (A-B)?

Solve -4x < 20 , when x is a natural number .

If the replacement set is the set of natural numbers, solve : (i) x-5 lt 0 (ii) x+1 le 7 (iii) 3x-4 gt 6 (iv) 4x+1 ge 17

If M= {x: x le 7 and x in N} for universal set of natural number, then M is