show that 2×3×5×13×17+13 is a composite no.
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13 ( 30×70)
=13 (30×17+1)
=13 (510+1)
=13 (511)
here 13 is common
as we know ,factors of composite no. are prone no.
so, this is a composite no.
=13 (30×17+1)
=13 (510+1)
=13 (511)
here 13 is common
as we know ,factors of composite no. are prone no.
so, this is a composite no.
dayashankar:
what is prone no.
prone????
sorry !that is prime not prone
by mistake i types prone in place of prime
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