Difference of two natural numbers is always
an integer
a natural number
a whole number
a positive number
HCF of two numbers is 9 and their LCM is 270. If the sum of the numbers is 99, their difference is equal to
18
15
12
9
Mode of the given data 25, 23, 22, 21, 24, 23, 25, 23, 22, 21, 23, 24, 23, 22, 23 is
23
22
21
24
4cm
6cm
8cm
10cm
A.
4cm