Question

(b) 4 -
as the sum of
integers, namely 5 = 4 + 1 = 3 + 2. In how many
ways, 9 can be expressed as the sum of two different
positive (non-zero) integers?
(a) 3
(c) 5
(d) 6
17. P and Q are two positive integers such that
PQ = 64. Which of the following cannot be the
value of P + Q?
(a) 16
(b) 20
(c) 35
(d) 65
18. If x + y + z = 9 and both y and z are positive integers
greater than zero, then the maximum value x car
take is
(Campus Recruitment, 2006)
(a) 3
(6) 7​

Answer 1

Answer:

There are just two ways in which 5 may be expressed as the sum of two different positive (non-zero) integers, namely