Question

If a and b are any two natural numbers (b<a) then the no.of natural numbers
between them a and b are
a) b-a
b) b+a
c) (b-a) +1 d) (b-a)+1​

Answer 1

Step-by-step explanation:

answer will be (b-a)-1

for example if 2 and 4 are two natural numbers then between 2and 4 there will be 3.

and by using (b-a)-1

(4-2)-1=3

Answer 2

Answer: Correct answer will be (b-a) -1

Step-by-step explanation:

This question can be solved by taking an easy example.

If a = 1, b = 5 (a,b ∈ N),

then no. of natural numbers between them are 2, 3 & 4 (that is 3).

The only way to achieve 3 is by subtracting one from the difference of a and b,

that is, (b-a)-1

or (5-1)-1 = 3

The same will not be true if either a or b is a whole number.

Note: The question has mistake in one of the options. I believe if (c) is (b-a)+1, then (d) would be (b-a)-1.