Moulovibazar Higher Secondary 2017#2

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samiul_samin
Posts:1007
Joined:Sat Dec 09, 2017 1:32 pm
Moulovibazar Higher Secondary 2017#2

Unread post by samiul_samin » Sat Feb 24, 2018 1:05 am

How many numbers are there which contain $5$ digits and the sum and product of the digits are both prime numbers?

samiul_samin
Posts:1007
Joined:Sat Dec 09, 2017 1:32 pm

Re: Moulovibazar Higher Secondary 2017#2

Unread post by samiul_samin » Sat Feb 24, 2018 1:05 am

Hint
$3+4+4=11$
Answer
$\fbox {10}$

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