Q. There are just two ways in which 5 may be expressed as the sum of two different positive (non-zero, integers, namely 5 = 4 + 1 = 3 + 2. In how mam ways, 9 can be expressed as the sum of two different positive (non-zero) integers?

Q. If n is an integer between 20 and 80, then any of the following could be n + 7 except

Q. What is the sum of the squares of the digits from 1 to 9

Q. Every rational number is also

Q. The smallest number of 5 digits beginning with 3 and ending with 5 will be

Q. If x + y + z = 9 and both y and z are positive integers greater than zero, then the maximum value x can take is

Q. If the largest three-digit number is subtracted from the smallest five-digit number, then the remainder is

Q. P and Q are two positive integers such that PQ = 64. Which of the following cannot be the value of P + Q?

Consider the following statements about natural numbers:

1. There exists a smallest natural number.
2. There exists a largest natural number
3. Between two natural numbers, there is always a natural number.

Which of the above statements is/are correct?

Q. The number  π is