Question

what is the greatest number to be filled in the blanks which makes them divisible by 8.
a)36,79.....2
b)18902...4​

Answer 1

$\underline{\pink{ Divisibility \:by \: 8: }}$

In a given number if the number formed with its last 3 digits are divisible by 8 or last 3 digits are '0' s then that number is divisible by 8.

$Here , a ) 36,79 \_ 2$

$Last \: 3 \: digits \: are \: 9\_2$

$i) 9 \red{1} 2 \: and \: 9\red{9}2 \:are$

$divisible \: by \: 8$

$But , we \: require \: greatest \: number .$

$Required \: number \: 3679\underline{\red{9}}2$

$Here , b )18902 \_ 4$

$Last \: 3 \: digits \: are \: 2\_4$

$ii) 2 \red{2} 4 \:divisible \: by \: 8$

$Required \: number \:18902\underline{\red{2}}4$

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