Question

check whether the following numbers are divisible by 11? 19091908​

Answer 1

The Divisibility Rule of 11 is ⇒ The alternative sum of the digits of Number is divisible by 11

This can be understood by the application of above rule in given Numbers

(a)786764⇒7−8+6−7+6−4=0

Therefore it is divisible by 11.

(b)536393⇒5−3+6−3+9−3=11

Therefore it is divisible by 11.

(c)110011⇒1−1+0−0+1−1=0

Therefore it is divisible by 11.

(d)1210121⇒1−2+1−0+1−2+1=0

Therefore it is divisible by 11.

(e)758043⇒7−5+8−0+4−3=11

Therefore it is divisible by 11.

(f)8338472⇒8−3+3−8+4−7+2=2

Therefore it is not divisible by 11.

(g)54678⇒5−4+6−7+8=8

Therefore it is not divisible by 11.

(i)13431⇒1−3+4−3+1=0

Therefore it is divisible by 11.

(j)423423⇒4−2+3−4+2−3=0

Therefore it is divisible by 11.

(k)168861⇒1−6+8−8+6−1=0

Therefore it is divisible by 11.