Question

Determine if 26 39 21 is divisible by 3​

Answer 1

Answer:

39 and 21 is divisible by 3

26 is not divisible 3

Answer 2

$\huge\bold{\mathtt{Question⇒}}$

Determine if 26, 39 and 21 is divisible by 3.

$\huge\bold{\mathtt{To\:find⇒}}$

Whether the number is divisible by 3.

$\huge\bold{\mathtt{Solution⇒}}$

We know that:

A number is divisible by 3 only if the sum of its digits is divisible by 3.

The number is 26.

Sum of its digits⇒

2+6

= 8

8 is not divisible by 3.

Hence, the number 26 is not divisible by 3.

The number is 39.

Sum of its digits⇒

3+9

= 12

12 is not divisible by 3.

Hence, the number 39 is divisible by 3.

The number is 21.

Sum of its digits⇒

2+1

= 3

4 is not divisible by 3.

Hence, the number 21 is divisible by 3.

$\huge\bold{\mathtt{Done}}$

$\large\bold{\mathtt{Hope\:this\:helps\:you.}}$

$\large\bold{\mathtt{Have\:a\:nice\:day.}}$