Which of the following sets are null sets:
A). 2 and 3
B). {x: x < 5, x > 6}
C). {x: |x |< -4, x ?N}
D). Set of all prime numbers between 15 and 19
1. Which of the following are true:
3. Let A = {x: x is a digit in the number 3591}, B = {x: x ? N, x<10}. Which of the following is false?
4. If A = {4n -3n -1: n ? N} and B = {9(n-1): n ? N}, then we have
6. __________ pumps are a group of vacuum pumps.
8. Fluid flow in a/an __________ is an example of pressure flow.
9. The discharge through a semi-circular weir varies as (where, H = Head of liquid.)
10. A supercritical boiler is one that operates above the pressure and temperature of following values