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Express each of the following numbers as...

Express each of the following numbers as the sum of three odd primes:(a)  21    (b) 31    (c)  53    (d) 61

Text Solution

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(a) `21 = 3+5 +13`
(b) `31 = 5+7+9`
(c) `53= 7+17+29`
(d) `61= 13+17+31`
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