Question

57. A digit n > 3 is divisible by 3 but not
divisible by 6. Which one of the
following is divisible by 4?
(a) 2n
(b) 3n
(c) 2n +4
(d) 3n+1
58. If 1 litre of water weighs 1 kg, then how
many cubic millimetres of water will
weigh 0:1 gm?
(a) 1
(b) 10
(c) 100
(d) 1000
of
le
of
le
е
59. A vessel full of water weighs 40 kg. If it
is one-third filled, its weight becomes
20 kg. What is the weight of the empty
vessel?
(a) 10 kg
(b) 15 kg
(c) 20 kg
(d) 25 kg
60. A frog tries to come out of a dried well
4.5 m deep with slippery walls. Every
time the frog jumps 30 cm, slides down
15 cm. What is the number of jumps
required for the frog to come out of the
well?
(a) 28
(b) 29
(c) 30
(d) 31​

Answer 1

Answer:

57.9

d is answer

Step-by-step explanation:

58. 1L=1000 cubic cm of water weighs 1000g

1000 g is the weight of (1000×1000)cubic mm(1cm=10mm)

0.1 g is the weight of (1000×1000)/0.1

cubic mm=100 cu mm

59. 1/3 filled vessel weighs= 20 kg

enmpty vessel weighs=40–20=20kg

third part of vessel =20–10=10kg

60. answer=30

explanation= when the frog tries to come out of the well it climbs 30 cm and slides 15 cm so the frog gets then advantage of 15 CM

now 450÷15=30