Maths / Playing With Numbers / Divisibility Rule of 11

QUESTION
 

Which number is divisible by 5 and 11?

OPTIONS
A. 

2855

B. 

639210

C. 

97860

D. 

6685

Right Option : B

EXPLANATION
Explain TypeExplanation Content
Text

To check the divisibility of 5 units digit should be 0 or 5  639210 has 0 at units place.

639210

sum of digits at odd place=0+2+3=5  

sum of digits at even place=1+9+6=16

difference=16-5=11(so it is divisible by 11) 

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