[PP Sub Inspector 17 Aug 2021]
1. A metal cylindrical pipe is of height 35 cm, inner diameter 14 cm and thickness 2 cm. Find the volume of the metal used. (Take \(\pi = {22 \over 7}\) )
3580 cm3
3570 cm3
3560 cm3
3520 cm3
2. What is the value of the following expression?
(30 + 30 × 30 ÷ 30)/(30 × 30 ÷ 30 + 30)
1
15
10
30
3. In covering a distance of 60 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then he will take 1 hour less than Sameer. Abhay's speed is:
10 km/h
12 km/h
4 km/h
6 km/h
4. If Rakhi and Raji can together do a job in 8 hours and Rakhi can do the job alone in 10 hours, then in how many hours can Raji do the job alone?
38 hours
30 hours
34 hours
40 hours
5. Find the GCD of (3, 5, 8).
-1
120
16