Question

What is the range of this set of numbers?
40, 42, 31, 50, 59, 68, 70
A
30
B
20
C
45
D
39

Answer 1

Answer: $39$

Order the numbers

Before: $40, 42, 31, 50, 59, 68, 70$

After: $31, 40, 42, 50, 59, 68, 70$

Subtract

$70-31=39$