Related Questions

The number of two digit prime numbers which remain prime even inverting the position of its digits is:
A 4
B 5
C 9
D 10
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 -
A 17
B 29
C 37
D 53
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 =
A 15
B 33
C 34
D 51
A number is selected at random from 40 to 59 inclusive . What is the probability that the number is prime number ?
A 3/11
B 3/10
C 2/11
D 1/5
Find the number which is NOT a prime number.
A 89
B 87
C 79
D 97
Find the probability of selecting a prime number from a set of number 1 to 15 (both inclusive).
A 1/15
B 3/5
C 2/5
D 7/15
Which one of the following is not a prime number ?
A 31
B 61
C 91
D 71
Which one of the following is not a prime number?
A 31
B 61
C 71
D 91
Which of the following is not a prime number?
A 233
B 251
C 241
D 259
Which of the following numbers is not a prime number?
A 731
B 227
C 347
D 461

Next steps