any repeating decimal is a rational number.
0.45 = 0.4 + 0.0555555.
= 4/10 + 5/90
= 41/90
All of the above decimals are rational, since they either repeat or terminate.
Which of the following decimal expansion cannot be a rational number
A) 0.697
B) 0.45 (bar in 5)
C) 0.3789 (bar 3789)
D) 0.87658217
ANSWER)
B is correct
An i right or wrong
1 answer