Quote:
Originally Posted by Taimoor Gondal
your 1,2 and 3 are correct.
4: (61+67+71+73+79) = 351
5: I wrote 5 (9, 99, 333, 9999 and 3333) if there is any other then please correct me.
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in your answer 5 i wrote also 5(9, 99, 909, 9990 and like that)
i dont understand your answer of 4. it was not written in the question to add the prime numbers rather it was written that set of all prime numbers from 60 to 80. how can we conclude that we have to add prime number between the 60 and 80.