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The number of two digit prime numbers which remain prime even inverting the position of its digits is:
The smallest prime number, that is the fifth term of an increasing arithmetic sequence in which all the four preceding terms are also prime, is -
The product P of two prime numbers is between 9 and 55. If one of the prime numbers is greater than 2 but less than 6 and the other is greater than 13 but less than 25, then P =
Find the probability of selecting a prime number from a set of number 1 to 15 (both inclusive).
Find the probability of selecting a prime number from a set numbers 1 to 15 (both inclusive)
A number is selected at random from 40 to 59 inclusive . What is the probability that the number is prime number ?
Which number is not a prime number?
Find out which underlined part of the following sentences has an error. The prime rate is the interest that a bank will "charge" when "it" "borrows" money to "its" best clients. "No Error"
Which one of the following is not a prime number ?
Which one of the following is not a prime number?