E

**asy:**

**U**

**L**

**ook 4**E

**xercise**R

**esult**

2007 marked the three hundredth anniversary of great mathematician Leonhard Euler’s birth. The sum of the digits of the year in which he died is 19 and the last two digits make a prime number. We know that he lived more than 40 years so, CAN YOU FIGURE OUT WHICH YEAR HE ACTUALLY DIED

**?**, please.

__Reason your answer__Remember to send your answers to matecampanar@gmail.com

SOLUTION

2007 - 300 = 1707

1707 + 40 = 1747

If the sum of the digits is 19 and we already have 17xx, we need 11 in the last two digits. The only possibility, being the last two digits a prime number, is thus 1783.

The reader has flown to Mykha Semenov. Congratulations!

SOLUTION

2007 - 300 = 1707

1707 + 40 = 1747

If the sum of the digits is 19 and we already have 17xx, we need 11 in the last two digits. The only possibility, being the last two digits a prime number, is thus 1783.

The reader has flown to Mykha Semenov. Congratulations!

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