state gov UP Police Workshop Staff (Radio Cadre) Mock Test Quantitative Aptitude Number System Quick Math
A class starts at 10.00 a.m. and lasts till 1.27 p.m. Four periods are held during this interval. After every period, 5 minutes rest are given to the students. The exact duration of each period is:
1
42 minutes
2
48 minutes
3
51 minutes
4
53 minutes