Divisibility Rule of 10
Divisibility Rule of 10
Divisibility Rule of 10:
A number is divisible by 10, if its units digit is zero.
Justification:
Let ...cba be an arbitrary number whose ones digit is a, tens digit is b, hundreds digit is c and so on. Then,
is divisible by 10 if and only if a = 0.
is divisible by 10 if and only if its units digit is 0.
It follows from the above discussion that a number is divisible by 10 if and only if its units digit is zero.
Hence the Test of Divisibility By 10 that is a number is divisible by 10, if its units digit is zero is justified
Illustration 1: Write 231 in the form 10b + a then check its divisibility by 10
Solution: We will express 231 in the form 10b + a
where a = 1 and b = 23.
The number 231 will leave a remainder 1 when divided by 10 because the digit at the unit place represented by a in general form is 1.
The value of literal b is ______ when 735 in the form 10b + a. | |||
| Right Option : B | |||
| View Explanation | |||
Which of the following numbers are divisible by 10 ? 2459652, 6544790, 15649645, 14646940, 12548448, 548784, 4586780 | |||
| Right Option : C | |||
| View Explanation | |||
The value of literal b is ______ when 236 in the form 10b + a and the remainder when 236 is divided by 10 is ____________. | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [20]
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10thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
