Ques:- How many litres of pure acid are there in 8 litres of a 20% solution?
A. 1.4
B. 1.5
C. 1.6
D. 2.4
Ques:- How often between 11 o’clock and 12 o’clock are the hands of a clock in integral number of minutes apart?
A. 54 times
B. 55 times
C. 56 times
D. 58 times
Ques:- Find out the wrong number in the series:
5, 15, 30, 135, 405, 1215, 3645
5, 15, 30, 135, 405, 1215, 3645
A. 15
B. 30
C. 405
D. 3645