Question

Answer the following if X + Y = Z, where X, Y, Z each stand ror a distinct digit from 1 to 9;
(a) What is the greatest digit that X could be? 9
(b) What is the greatest digit that Z could be?
(c) What is the smallest digit that Z could be? 1
(d) If X, Y and Z are odd, what digit(s) could Z be? Why?
(e) If Z is 3 more than X, what digit(s) could Y be?
(1) If X is 5 times as great as Y, then what digit(s) could Z be? Why?

Answer 1

Answer:

a) 8

b) 9

c) 2

d)2,4,6,8 as sum of two odd numbers is always even

e) 3

f) 6 as 5 times of any number other than 1 will be greater than 9