Friday, September 24, 2010

If n is a an integer between 10 and 99

If n is a an integer between 10 and 99 is n '<' 80?
(1) The sum of the two digits of n is a prime number.
(2) Each of the two digits of n is a prime number






From the Q stem : 10 '<' n '<' 99 .......Is n '<' 80 ??
a) Looking from the stem ....N can be - 83 or 23 - Insuff
b) Now the Numbers from 81 - 98 do not satisfy stmt 2. Hence N must be below 80...So n can be any number such as 32 or 23 but it satisfies the Q stem. Suff
Ans - B

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