An irrational number lying between the numbers 0.401001000100001... and 0.404004000400004... is (a) 0.405005000500005... (b) 0.402 (c) 0.403 (d) 0.402002000200002...

Step-by-step solution

Let x = 0.401001000100001 ....... and y = 0.404004000400004 ....... An irrational number between x and y is 0.402002000200002 ....... ∴ Correct option is (d)