MBA Exam

Which of the following is/are not prime?1. (2^5001)+12.(2^5002)+13.(2^5003)+1

1) 1&2
2) 2&3
3) 1,2,3
4) 1&3

Read Solution (Total 1)

Last two digits of 2^5001 +1 is 53 ; Last two digits of 2^5002 +1 is 05 which is obviously not prime, Last two digits of 2^5003 +1 is 09. So from the options it is should be 1 &3. SO option 4.
8 years agoHelpfull: Yes(0) No(1)

MBA Other Question

âˆ†ABC inscribed in a circle C, has its sides in the ratio 1 : 2 : âˆš5. Find the ratio of the radius of the incircle of âˆ†ABC to that of its circumcircle?

1) 1/5(3âˆš5 - 5)
2) âˆš5 + 1/2
3) 2âˆš5 - 3/5
4) Canâ€™t be determined
K(N) denotes the number of ways in which N can be expressed as a difference of two perfect squares. which of the following is maximum?

1) K(110)
2) K(105)
3) K(216)
4) K(384)