Maths olympiad Exam Numerical Ability

what is the least no which should be added to 0.0282 make it perfect squear...?
a.0.0007
b.0.0042
c.0.0002
d.0.0003

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0.0007
9 years agoHelpfull: Yes(0) No(0)

both a and b are perfect square but among them option a is the least perfect square num
8 years agoHelpfull: Yes(0) No(0)

Maths olympiad Other Question

what is least perfest square. which is divisible by 24, 30,60?
a.1600
b.3600
c.14400
d.32400 supiya runs a race in 50 minutes at an avg speed of 48km/hr in order to set a national record she needs to win the race in 40 minutes.what is the minimum speed to set the record
a.70km/hr
b.60km/hr
c.55km/hr
d.50km/hr