19th March 2016
Spot an ‘a’ in the spellings of the first 100 natural numbers
In the spellings of the first 100 natural numbers, ‘a’ does not occur even once.
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18th March 2016
Unique properties of ‘37’ and ‘73’
‘37’ is the 12th prime number and ‘73’ is the 21st prime number. ‘73’ is the mirror image of 37 and 21 is the mirror image of 12. Moreover, the factors of 21 are 3 and 7, the digits which constitute 37 and 73.
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