What is the number of prime numbers less than 100 the sum of whose digits is divisible by 2
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ans)13
2,11,13,17,19,31,37,53,59,71,73,79,97
2,11,13,17,19,31,37,53,59,71,73,79,97
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There are 13 number whose sum is divisible by 2
They are 2,11,13,17,19,31,37,53,59,71,73,79,97
We will take 97=9+7=16
16 is divisible by 2
Same like this do all other sums
They are 2,11,13,17,19,31,37,53,59,71,73,79,97
We will take 97=9+7=16
16 is divisible by 2
Same like this do all other sums
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