Question

Divisibility by 2,5,10 can be checked by
(a) sum of digits
(b) last digit
(c) last two digits
(d) last three digits

Answer 1

Answer:

The correct option is (b) last digit.

Step-by-step explanation:

To find: divisibility by $2,5,10$ can be checked by.

Solution:

• Divisibility rule for $2$: If a number ends in a 0,2,4,6 or 8 it is divisible by 2. All even number is divisible by 2. Example is $26,48$ etc.

• Divisible rule for 5: If a number ends in either $0$ or $5,$ it is divisible by $5.$ Example: 5,30,510,10050 etc.

• Divisible rule for $10$: If a number ends in a $0$, it divisible by $10.$ Example is $20,50,70,1000$ etc.

So, we can checked any number divisible by $2,5$ and $10$ using last digit.

Hence, option (b) last digit is correct.

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Answer 2

Answer:

Divisibility by 2,5,10 can be checked by last digit

Step-by-step explanation:

Rule for division for two

• If a number ends in a 0, 2, 4, 6, or 8,
• It can be divided by two.
• Every even number can be divided by 2. 

Rule of division for five: 

• A number is divisible by if it ends in either 0 or 5
• Example: 5, 10,100 etc

Rule of division for ten 

• If a number ends in an 0, it is divisible by 10. 
• Example: 10,100,1000

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