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Q)

# 134343515 + 13484353 is divisible by

( A ) all of these
( B ) 6
( C ) 3
( D ) 4

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A)
Solution :
$134343515$
$\; 13484353$
____________
$147827868$
Sum of the digits =$1+4+7+8+2+7+8+6+8$
$\qquad= 51$
Which is divisible by 3
a number is divisible by 3 if the sum of digit is divisible by 3.
Any whole number that ends in $0,2,4,6,0 and 8 will be divisible by 2. Hence the above number is divisible by 2 and 3 it is divisible by 6 divisibility rule for 4: If the last 2 digit of a whole number is divisible by 4 then the entire number is divisible by 4.$147827868$is divisible by$2,3,6,4\$