1.

If 58d6 is a multiple of 9, where d is a digit, then the value of d is __________​

Answer»

ANSWER:

xplanation: p-7= 11*a (as it is MULTIPLE of 11)

p=11*(a+7)

so (p+4)(p+15)= (11a+7+4)(11a+7+15);

= (11a+11)(11a+22);

=11*11(a+1)(a+2);

=121*2

=242



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