Question

Pls tell the correct answer . Pls Urgent pls ​

Answer 1

Answer:

first one is invalid

Explanation:

when a number is written with a certain base, you have to check that whether the value of the digits are less than the given base.

for example, we can only use the digits 0 and 1 in binary since its base is 2.

now in option 1, number is 9108 and base is 8

it cannot be an octal number since 9 and 8 are not part of the octal number system

in option 2, digits are 1 and 0 and base is 2, so it's correct.

in option 3, digits are A (10) , B (11) , C (12) , and D (13) and base is 16, so it's a valid hexadecimal number.

in option 4, it is a decimal number like any other number we use since the base is 10

hope this helps...